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1. filler fairing compound sandability gap filling Filler suitability for various uses x x excellent x x very good x good x fair no stars not recommended Filler Buying Guide O l1 Package Size Adhesive fillers are suitable for most consistency consistency consistency bonding situations especially high density 3 8 qt 2 5 qt 1 0 qt materials like hardwoods and metals Adhe 3 2 gal 2 0 gal mun sive filler mixtures cure to a strong hard to 48 01 32 0 sand plastic useful in structural applications 94 74 bonding filleting and hardware bonding 2 8 qt 2 0 qt 7 4 gal 5 3 gal 6 6 6 06 6 6 6 6 6 GO 6 6 0 6 6 0 0 6 0 6 6 O 6 6 6 o Fairing filler mixtures cure to light easily sanaable material that is generally used for cosmetic or surface applications like D shaping filling or fairing Seal all faired ira surfaces with epoxy before painting rim 1 3 qt 1 0 qt General use filler selection may be 4 8 gal P based on the handling characteristics you 9 qt 74 preter Fillers may also be blended to create 2 4 qt 1 8 qt 7 2 gal 5 6 gal mixtures with intermediate characteristics zs 6 6 6 0 9 0 6 0 0 9 0 0 0 O 0 O 9 0 GO 0 06 O 0 6 O 0 0 O
2. 403 204 eT 40 6 MIC ROFIBERS Kell 5 ADHESIVE FILL i zi F M E FILLETING BLEND ESIVE FILLE Pro FILLE Fairing Fillers 407 Low Density 407 Low Density Filler is a blended microballoon based filler used to make fairing putties that are easy to sand or carve Reasonably strong on a strength to weight basis Cures to a dark red brown color ETE 407 410 LOW DENSITY FAIRING FILLE 404 High Density 406 Colloidal Silica 404 High Density Filler is a thickening 406 Colloidal Silica is a thickening additive used to additive developed for maximum physical control the viscosity of the epoxy and prevent epoxy properties in hardware bonding where runoff in vertical and overhead joints 406 is a very high cyclic loads are anticipated It can strong filler that creates a smooth mixture ideal for also be used for filleting and gap filling general bonding and filleting It is also our most versatile where maximum strength is necessary filler Often used in combination with other fillers it can Cures to an off white color be used to improve the strength abrasion resistance and consistency of fairing compounds resulting in a tougher smoother surface Cures to an off white color 10 West System User Manual amp Product Guide 410 Microlight 410 Microlight is the ideal low density filler for creating a light easily worked fairing compound especially suite
3. 53 82 Ib 155 180 m 207 233 m 12 0 Ib m J f N i Product Guide a Selection HARDENER TEMPERATURE RANGE F CURE SPEEDS at room temp Select a hardener for its 331 a WORKING TO intended use and for the sp ef 70 80 90 p RULER ME SOLID 40 50 60 70 80 90 100 oogcuptu thin film thin film for your job in the tem 205 Fast cure General bonding fabric 9 12 60 70 6 8 perature range in which application and barrier coating minutes minutes hours you are working 206 Blog cure General bonding fabric 20 25 90 110 10 15 application and barrier coating minutes minutes hours 209 Extra Slow cure General bonding 40 50 3 4 20 24 fabric application barrier coating minutes hours hours 207 Clear fabric application clear 20 26 100 120 10 15 coating and general bonding minutes minutes hours Epoxy cures faster in warmer temperatures and in thicker applications Epoxy cures slower in cooler temperatures and in thinner applications 205 Fast Hardener 205 Fast Hardener is formulated for general coating and bonding applications at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature 105 205 forms a high strength moisture resistant solid with excellent bonding and barrier coating properties Not intended for clear coating Mix ratio 5 parts resin 1 part hardener Pot life at 72 F 22 C
4. 9 to 12 min Cure to a solid state 6 to 8 hrs Cure to working strength 1 to 4 days Min recommended temp 40 F 4 Storage Shelf Life Store at room temperature Keep containers closed to prevent contamination With proper storage resin and hardeners should remain usable for many years After a long storage verify the metering accuracy of the pumps Mix a small test batch to assure proper curing Over time 105 Resin will thicken slightly and will therefore require extra care when mixing Repeated freeze thaw cycles during storage may cause crystallization of 105 Resin Warm resin to 125 F and stir to dissolve crystals Hardeners may darken with age but physical properties are not affected by color If clear finishing be aware of a possible color shift if very old and new hardeners are used on the same project 206 Slow Hardener 206 Slow Hardener is formulated for general coating and bonding applications when extended working and cure time are needed or to provide adequate working time at higher temperatures 105 206 forms a high strength moisture resistant solid with excellent bonding and barrier coating properties Not intended for clear coating Mix ratio 5 parts resin 1 part hardener Pot life at 72 F 22 C 20 to 25 min Cure to a solid state 10 to 15 hrs Cure to working strength 1 to 4 days Min recommended temp 60 F 16 C 209 Extra Slow Hardener 209 Extra Slow Hardener is formulated f
5. User Manual 002 898 WEST SYSTEM Epoxy How To DVD compilation of three instructional videos demonstrating basic handling and advanced epoxy repair techniques Basic Application Techniques A guide to the optimum use of WEST SYSTEM Epoxy products including epoxy safety and procedures for coating bonding and fairing Fiberglass Repair with WEST SYSTEM Epoxy making structural repairs on fiberglass boats including repairs to cored and non cored hulls and how to apply gelcoat over epoxy repairs Gelcoat Blister Repair with WEST SYSTEM Epoxy A guide for analyzing the causes of blister formation repairing and preventing gelcoat blisters on fiberglass boats Interactive menus allow for easy navigation through these subjects 00 59 minutes WEST SYSTEM User Manual amp Product Guide The Gougeon Brothers on Boat Construction Band Wis Slee Malerrars 002 The Gougeon Brothers on Boat Construction Decades of experience building with wood and epoxy are compiled in this classic on wood epoxy boat building Extensive chapters on lofting safety tools and construction methods are described with the aid of hundreds of detailed illustrations and photographs This 5th edition includes about 2096 new and updated material and a revised layout for easier navigation Used as a textbook in boat building schools Over 100 000 copies in print Hard cover 406 pages Wooden Boat Restoration amp Repair SS Fib
6. organic vapor cartridge P100 particulate filter or a multi con taminant cartridge Consult with your respiratory and cartridge supplier to ensure the proper selection based on chemical ingredients and specific workplace conditions 21 Caution Large pots of curing epoxy can get hot enough to ignite surrounding combustible materials and give off hazardous fumes Place pots of mixed epoxy in a safe and ventilated area away from workers and combustible materials Dispose of the solid mass only if cure is complete and the mass has cooled Follow federal state or local disposal regulations 22 Provide ventilation and wear a dust mask when sanding epoxy especially uncured epoxy Breathing dust from epoxy that is not fully cured increases your risk of sensiti zation Although epoxy cures quickly to a sandable solid it may take over two weeks at room temperature or post curing to cure completely 3 Avoid ingestion Wash thoroughly after handling epoxy especially before eating or smoking If epoxy is swallowed rinse mouth with water DO NOT induce vomiting Because hardeners are corrosive they can cause additional harm if vomited Call a physician immediately Refer to First Aid procedures on the Safety Data Sheet 4 KEEP RESINS HARDENERS FILLERS AND SOLVENTS OUT OF THE REACH OF CHILDREN For additional safety information or data refer to the Safety Data Sheets or write to EPOXY SAFETY WEST SYSTEM Box 908
7. wait until the epoxy coating has gelled before warming it Never heat mixed epoxy a liquid state over 120 F 49 C Regardless of what steps are taken to control the cure time thorough planning of the application and assembly will allow you to make maximum use of epoxy s open time and cure time You can improve ep oxy s thermal perfor mance and reduce the potential for fabric orint through by ap plying modest heat to the epoxy after it has cured to a solid state Contact our technical staff for more infor mation about post 23 WARNING Curing epoxy generates heat Do not fill voids or cast layers of epoxy thicker than Y2 thinner if enclosed by foam or other insulating material Several inches of mixed epoxy in a confined mass Such as mixing cup will generate enough heat to melt a plastic cup burn your skin or ignite combustible materials if left to stand for its full pot life For this reason do not use foam or glass mixing containers or pour into contined spaces If a pot of mixed epoxy begins to exotherm heat up quickly move it outdoors Avoid breathing the fumes Do not dispose of the mixture until the reaction is complete and has cooled 24 Controlling Cure Time Open time and overall cure time govern much of the activity of building and repairing with epoxy Open time dictates the time available for mixing application smoothing shaping assembly an
8. 10 roll 727 20 4 wide x 20 yd roll Average of multiple layers applied by hand lay up Glass Tape Versatile WEST SYSTEM 9 oz woven E glass fabric tapes with bound edges are ideal for reinforcing chines hull deck corners and similar structural applications When bonded with WEST SYSTEM Epoxy they provide addi tional tensile strength to resist hairline crack development and abrasion 729 10 2 wide x 10 roll 729 2 wide x 50 yd roll 731 3 wide x 50 yd roll 732 10 4 wide x 10 roll 732 4 wide x 50 yd roll 733 6 wide x 50 yd roll Application Tools Product Guide 800 Roller Covers These thin polyurethane foam covers are the only roller covers recommended for epoxy application The thin foam allows you to control film thickness avoid drips and runs and get a smoother coating The 7 covers can be cut for smaller jobs narrow strips and tight areas Cut segments make ideal tipping brushes 800 2 2 ea on Cut into segments for tipping off qu freshly applied coats of epoxy Cut covers into narrower widths to coat smaller areas 801 HD Roller Frame 3 caged roller frame holds 7 full width covers and covers cut to narrower widths 1 ea z H NO 2 A E Epoxy will not bond plastic tools or mixing pots because their glossy surface does not provide enough texture or tooth for epoxy to key into When cured flex the tool to loosen epoxy Thick films pop off easier than t
9. Q 7 gt O CLEAR HARDENEI EXTRA Er E 2 HARDENER eren Se 125 8 11 ax 2 7 store me w Ge TAR rs Rat 2 Product Guide E RESIN 207 CLEAR COATING and CLEAR FIBERGLASSING 35 page m Special Clear Hardener APPLYING FIBERGLASS D Start with 105 Epoxy Resin Se the basic ingredient of all SEALING and BARRIER COATING 5 WEST SYSTEM Epoxy GLUING TIGHT JOINTS and LAMINATING gt compounds Use 300 Mini gt Pumps for convenient and METERING accurate metering PUMPS Microlight age 13 Ls ES gt m Mix with one of four WEST SURFACE a SYSTEM hardeners ExtralSlow Low Density FILLING Select a hardener for Hardener B Light Structural 9 ts gt g its intended use and for the cure speed best olloidal Silica nh j suited for your job in the 7 Slow d gt General Structural temperature range in Hardener which you are working Filleting Blend Wood Toned GLUING Add one of six WEST gem SYSTEM fillers to thicken High Load the mixture as needed Select a filler for its Microfibers handling 22 Or General Wood cured physical properties of four WEST SYSTEM additives to Pigment T gt provide specific coating Pigmented Undercoat E properties Graphite Powder KE Low friction SPECIAL 5 Barrier Coat COATING Blister Resistance gt a20 Aluminum Powder a Abrasion Resistance PR
10. Vacuum Tubing e 30Hg Vacuum Gauge e 2 Junction T barbs e 15 sq ft Release Fabric e 15 sq ft Breather Fabric e 15 50 ft Vacuum Bag Film e 25 Vacuum Bag Sealant e Complete illustrated instructions Special Tools 875 Scarffer A unique tool designed by boatbuilders for cutting accurate scarf joints in plywood up to 3 8 thick Attaches easily to most circular saws and is easily removed Saw must have a base plate extension outside of the blade 1 2 or wider Vacuum Bagging is a clamping system used for laminating a wide range of fabrics core materials and veneers It uses atmospheric pressure to deliver firm even clamping pressure over the entire surface area of a composite part or repair regardless of the material or materials being laminated By laminating over simple molds composites can be molded into an endless variety of functional shapes 1 ea saw not included 16 West System User Manual amp Product Guide Our personal protective clothing is made out of a microporous film laminate material which provides a superior combination of strength barrier protection breathability 832 Disposable Gloves Lightweight seamless neoprene gloves are more chemically resistant than latex gloves They provide excellent protection while retaining good fing
11. WEST SYSTEM Epoxy begin with a small test batch to get the feel for the mixing and curing process before applying the mixture to your project This will demonstrate the hardener s open time for the temperature you are working in and assure you that the resin hardener ratio is metered properly Mix small batches until you are confident of the mixture s handling characteristics Mixing Stir the two ingredients together thoroughly at least 1 minute longer in cooler temperatures Figure 3 To assure thorough mixing scrape the sides and bottom of the pot as you mix Use the flat end of the mixing stick to reach the inside corner of the pot If you are using a power mixer occasionally scrape the sides and corners of the mixing pot while mixing If you are going to be using the mixture for coating quickly pour it into a roller pan to extend the open time ual contact our tech nical staff Call 866 937 8797 toll free or visit westsystem com where you can fill out a form and receive an emailed response to your question 25 Unthickened neat Slightly Thickened Moderately Thickened Maximum Thickness Figure 4 Epoxy can CONSISTENCY be thickened to Syrup Catsup Mayonnaise Peanut Butter the ideal consis tency needed for a particular job The procedures in this manual refer to four GENERAL common consisten APPEARANCE cies syrup catsup mayonnaise and peanut butter Drips off vertical surfaces Sags down vertical Cl
12. additional coats up to six coats or about a 20 mil thickness Six coats with 422 Barrier Coat Additive in the final five coats provides maximum moisture protection recommended for polyester fiberglass boats with gelcoat blisters Additives or pigments should not be added to the first coat Mixing thinners with WEST SYSTEM Epoxy is not recommended see Thinning Epoxy WEST 5 5 800 Roller Covers allow you greater control over film thickness are less likely to cause the epoxy to exotherm and leave less stipple than thicker roller covers Cut the covers into narrower widths to reach difficult areas or for long narrow surfaces like stringers A paint brush can be used for smaller areas if the bristles are stiff enough to spread the epoxy to an even film If necessary cut the bristles shorter Foam brushes are generally too flexible Epoxy applied with the 800 Roller Cover at room temperature 70 F and tipped off as described results in a film 3 4 mils thick A 6 or 7 mil film thickness two coats three coats if sanded provides an excellent moisture barrier for most exterior surfaces A 9 or 10 mil film thickness is the minimum recommended for hull bottoms or other surfaces that are continuously wet Additional coats provide additional moisture protection up to 20 mils five or six coats Epoxy film thickness per coat will vary with temperature thinner in warm temperatures thicker in cooler temperatures oix coats with th
13. avoid exotherm 4 Place the hardware in position resting on the blocks Figure 19 b and install the fasteners 5 Smooth the excess epoxy into the desired fillet shape around the base Figure 19 Allow the epoxy to cure fully before loading Protect exposed epoxy from UV Bonding Studs Bond threaded rods or studs into the substrate instead of bolts or screws and attach the hardware with nuts This variation is appropriate for many engine motor or machine installations Coat the base with wax mold release to make the hardware removable Although the hardware is not bonded to the substrate the epoxy will still provide a bearing surface that perfectly matches and supports the base of the hardware 1 Prepare the stud threaded rod by waxing the upper end above the surface and cleaning the lower end below the surface Place a nut on the stud positioned with the top of the nut slightly above the surface 2 Fill the hole 2 3 full with epoxy Allow to penetrate and refill as necessary 3 Wet out the lower end of the stud and push it into the epoxy filled hole Top off the hole or clean away excess as necessary Allow the epoxy to cure thoroughly before attaching hardware and tightening the nut Figure 20 Figure 17 Coat the hardware bottom and the fastener threads with thickened epoxy Backing Plate Figure 18 Tighten fasteners until a small amount of epoxy squeezes from the joint Figure 19 Support the base
14. chemistry required for high performance composite structures We have main tained that performance driven development of marine epoxies since the company was founded in 1969 continually formulating testing and improving WEST 5 5 Resins and Hardeners and developing specialty epoxies to produce the most reliable and well balanced epoxy systems available Our resin and hardener formulas ingredients and combinations are tested to compare fatigue strength compression strength glass tran sition temperature and peak exotherm Qualified samples undergo additional tests for hardness tensile strength tensile elongation tensile modulus flexural strength flexural modulus heat deflection temperature impact resistance and moisture exclusion effective ness This level of testing ensures that any change in a formula b lo zx No FE Van ial Pre V oO VOTO Vi SO TY IVICI CT will improve one or more of a product s characteristics without diminishing any characteristics As 150 9001 certified company Gougeon Brothers has numerous proto cols in place to ensure the quality of every batch of epoxy we make We are dedicated to providing the highest quality product to meet the standards our customers expect Comprehensive Testing Good science and comprehensive testing are essential not only for the develop ment of improved epoxy formulations but also for the development of muc
15. curing epoxy system for quick repairs tooling and general bonding It Is a strong water resistant adhesive that can be thickened as necessary with WEST SYSTEM fillers Bonds to wood fiberglass and metal 1 1 mixture no pumps are required Cures in 3 5 minutes at 72 F 865 4 4 fl 07 resin 4 fl oz hardener 865 16 16 fl 07 resin 16 fl oz hardener Larger sizes available Repair Kits 105 K Fiberglass Boat Repair Kit Repair cracks and scrapes gelcoat blisters loose hardware delaminated decks and panels damaged keels and holes up to 1 diameter in solid laminates up to Jo and smaller holes in thicker laminates Includes complete illustrated instructions 105 K 1 Kit 650 K Aluminum Boat Repair Kit Repair the most common problem with aluminum boats and canoes leaking seams and rivets Includes complete illus trated instructions 650 K 1 Kit 655 K Plastic Boat Repair Kit Repair splits cracks and small holes in plastic canoes kayaks and other small boats Includes instructions for patching air leaks re bonding attachment points repairing delaminated transoms and damaged floors in inflatable boats Includes complete illus trated instructions 655 K 1 Kit 101 Handy Repair Pack Everything you need to complete small repairs around the boat shop or home The Handy Repair Pack contains two WEST SYSTEM 105 Epoxy Resin 205 Fast Hardener packets and enough adhesive filler to complete a variety of coat
16. handle WEST SYSTEM Epoxies If you do get resin hardener or mixed epoxy on your skin remove it as soon as possible Resin is not water soluble use a waterless skin cleanser to remove resin or mixed epoxy from your skin Hardener is water soluble wash with soap and warm water to remove hardener or sanding dust from your skin Always wash thoroughly with soap and warm water after using epoxy Never use solvents to remove epoxy from your skin otop using the product if you develop an allergic type of reaction Resume work only after the symptoms disappear usually after several days When you resume work improve your safety precautions to prevent exposure to epoxy its vapors and sanding dust If problems persist discontinue use and consult a physician 1 Protect your eyes from contact with resin hardeners mixed epoxy and sanding dust by wearing appropriate eye protection If contact occurs immediately flush the eyes with water under low pressure for 15 minutes Seek medical attention or advice 2 Avoid breathing concentrated vapors and sanding dust WEST SYSTEM Epoxies have low volatile organic content VOC but vapors can build up in unventilated spaces Use adequate ventilation to avoid breathing vapors fumes and sanding dust particularly when working in confined spaces such as boat interiors When ventilation cannot be made adequate to keep exposures below safe levels use a NIOSH approved respirator with an organic vapor cartridge
17. it may be conveniently rolled back into position later 2 Roll a heavy coat of epoxy on the surface 3 Unroll the glass cloth over the wet epoxy and position it Surface tension will hold most cloth in position If you are applying the cloth vertically or overhead you may want to thicken the epoxy slightly with 406 filler then wait until it becomes sticky Work out wrinkles by lifting the edge of the cloth and smoothing from the center with your gloved hand or a plastic spreader 4 Apply a second coat of epoxy with a foam roller Apply enough epoxy to thoroughly wet out the cloth 5 Remove the excess epoxy with a plastic spreader using long overlapping strokes The cloth should appear consistently transparent with a smooth cloth texture 6 Follow steps 7 and 8 under the Dry method to finish the procedure Any remaining irregularities or transitions between cloth and substrate can be faired by using an epoxy filler fairing compound if the surface is to be painted Any addi tional fairing done after the final coating should receive several additional coats over the faired area Barrier Coating The object of barrier coating is to build up an epoxy coating that provides an effective moisture barrier and a smooth base for final finishing Apply a minimum of two coats of WEST SYSTEM Epoxy for an effective moisture barrier three coats if sanding is to be done recommended for most wooden boats Moisture protection will increase with
18. kick off The epoxy is no longer workable and will progress from a tacky gel consis tency to the firmness of hard rubber which you will be able to dent with your thumbnail The mixture will become tack free about midway through the initial cure phase While it is still tacky about like masking tape a new application of epoxy will still chemically bond with it so you may still bond to or recoat the surface without special preparation However this ability diminishes as the mixture approaches the final cure phase Solid Final Cure Phase The epoxy mixture has cured to a solid state and can be dry sanded You will no longer be able to dent it with your thumbnail At this point the epoxy has reached most of its ultimate strength so clamps can be removed A new application of epoxy will no longer chemically bond to it so the surface of the epoxy must be properly prepared and sanded before re coating to achieve a good mechanical secondary bond See Surface Preparation The mixture will continue to cure for the next several days to two weeks at room temperature becoming an inert plastic solid CAUTION Heating epoxy that has not gelled will lower its viscosity allowing the epoxy to run or sag more easily on vertical surfaces In addition heating epoxy applied to porous substrate soft wood or low density core material may cause the substrate to out gas and form bubbles or pinholes in the epoxy coating To avoid out gassing
19. not affect epoxy handling or cured strength Avoid ener and metal container using hardener for clear coating or exposed areas where color is not desired CAU SOL 41 Ng BO 16 Runabout Bill Beran FIBERwave Pavilion Architecture Students Rebel Nelson Niederer Pedal Car Tuscola Technology Center Students PT Spear Dinghy Russle Brown Gougeon Brothers Inc on Box 665 z WEST SYSTEM User Manual Bay City MI 48707 USA A amp Product Guide westsystem com 866 937 8797 E Catalog number 002 950 92015 Gougeon Brothers Inc M1115 8 113430101286 1
20. raise the epoxy temperature above the hardener s minimum recommended application temperature Use a hot air gun heat lamp or other heat source to warm the resin and hardener before mixing or after the epoxy is applied At room temperature supplemental heat is useful when a quicker cure is desired NOTE Unvented kerosene or propane heaters can inhibit the cure of epoxy and contaminate epoxy surfaces with unburned hydrocarbons Dispensing and Mixing 105 Resin and Hardeners Careful measuring of epoxy resin and hardener and thorough mixing are essential for a proper cure Whether the resin hardener mixture is applied as a coating or modified with fillers or additives observing the following procedures will assure a controlled and thorough chemical transition to a high strength epoxy solid Figure2 Dispense the proper propor tions of resin and hardener With Mini Pumps Pump one full pump stroke of resin for each one full pump stroke of hardener Dispensing Dispense the correct proportions of resin and hardener into a clean plastic metal or wax free paper container Figure 2 Don t use glass or foam containers because of the potential danger from exothermic heat buildup 1 stroke 1 stroke Resin Hardener DO NOT attempt to adjust the epoxy cure time by altering the mix ratio An accurate ratio is essential for a proper cure and full development of physical properties Dispensing With Mini Pumps Most problems related to c
21. surfaces hold the cloth in place with masking or duct tape or with staples 3 Mix a small quantity of epoxy three or four pumps each of resin and hardener 4 Pour a small pool of resin hardener near the center of the cloth 5 Spread the epoxy over the cloth surface with a plastic spreader working the epoxy gently from the pool into the dry areas Figure 24 Use a foam roller or brush to wet out fabric on vertical surfaces Properly wet out fabric is transparent White areas indicate dry fabric If you are applying the cloth over a porous surface be sure to leave enough epoxy to be absorbed by both the cloth and the surface below it Try to limit the amount of squeegeeing you do The more you work the wet surface the more minute air bubbles are placed in suspension in the epoxy This is especially important if you plan to use a clear finish You may use a roller or brush to apply epoxy to horizontal as well as vertical surfaces omooth wrinkles and position the cloth as you work your way to the edges Check for dry areas especially over porous surfaces and re wet them with epoxy as necessary before proceeding to the next step If you have to cut a pleat or notch in the cloth to lay it flat on a compound curve or corner make the cut with a pair of sharp scissors and overlap the edges for now 6 Squeegee away excess epoxy before the first batch begins to gel Figure 25 Slowly drag the spreader over the fabric at a low almost fl
22. to help a paint film bond to epoxy although interfacing primers may be required with some specialized bottom paints and high build primers are useful for hiding scratches or flaws in the substrate If the instructions on your paint or varnish recommend a specially primed surface follow the recommendations given for fiberglass preparation Self etching primers do not work well on an epoxy coating because of epoxy s chemical resistance Make a test panel to ensure compatibility Polyester gelcoat is a pigmented version of the resin used to build fiberglass boats and other products Gelcoat is sprayed into a mold before the glass fabric and resin are applied to provide a smooth pre finished surface when the part is removed from the mold It is not often used as a post production finish coating but it can be applied over epoxy and is useful in some repair situations Epoxy must be cured thoroughly Refer to 002 550 Fiberglass Boat Repair amp Maintenance for detailed information on patching gelcoat over an epoxy repair Follow all instructions from the coating systems manufacturer It is a good idea to make a test panel to evaluate the degree of surface preparation required and the compatibility and handling characteristics of the finish system 39 Problem Solver This guide is designed to help identify and prevent potential problems you may encounter using WEST SYSTEM Epoxy If the solutions described here do not resolve the problem call the Go
23. 9 0 06 9 6 0 9 Estimates based on 72 F More filler less epoxy may be required at higher temperatures EST SYSTEM User Manual amp Product Guide 11 Product Guide 12 Additives Additives are blended with mixed epoxy to alter the physical properties of epoxy when used as a coating Additives can be used to alter the color abrasion resistance or moisture resistance of cured epoxy aeo ALUMINUM POWDER 36 oz 1020 9 420 Aluminum Powder 420 Aluminum Powder will increase the hardness and abrasion resistance of the coated surface and improve its moisture resistance 420 provides limited protection from ultraviolet light in areas that will not be protected with other coatings and can be used as a base for subsequent painting Cures to a metallic gray color Add to mixed resin hardener at the rate of 5 10 by volume or 1 tablespoons per 8 fl oz of epoxy 10 strokes each of resin and hardener from 300 Mini Pumps 36 oz of 420 will modify up to five gallons of mixed epoxy 420 36 36 02 SRAPHITE POWDER 12 3400 423 Graphite Powder 423 Graphite Powder is a fine black powder that can be mixed with WEST SYSTEM epoxy to produce a low friction exterior coating with increased scuff resistance and durability Epoxy graphite is commonly used as a low load low speed bearing surface and as a coating on rudders and centerboards or on the bottoms o
24. Bay City MI 48707 USA Hazards Epoxies are safe when handled properly To use WEST SYsTEM Epoxies safely you must understand their hazards and take precautions to avoid them The primary hazard associated with epoxy involves skin contact WEST SYSTEM Resins may cause moderate skin irritation WEST 5 5 Hardeners are corrosive and may cause severe skin irritation Resins and hardeners are also sensitizers and may cause an allergic reaction similar to poison ivy Susceptibility and the severity of a reaction varies with the individual Although most people are not sensitive to WEST 5 5 Resins and Hardeners the risk of becoming sensitized increases with repeated contact For those who become sensitized the severity of the reaction may increase with each contact These hazards also apply to the sanding dust from epoxy that has not fully cured These hazards decrease as resin hardener mixtures reach full cure Refer to product labels or safety Data Sheets SDS for specific product warnings and safety information Cleanup Contain large spills with sand clay or other inert absorbent material Use a squeegee to contain small spills and collect as much material as possible Follow up with absorbent towels DO NOT use sawdust or other fine cellulose materials to absorb hardeners DO NOT dispose of hardener in trash containing sawdust or other cellulose materials spontaneous combustion can occur Clean resin or mixed epoxy residue wit
25. FREE Sec UN Oe COLLOIDAL SILICA ADHESIVE 1 WEST 206 EPOXY RESIN HARDENER Les m Sex ir gera MEIN 206 its i 5 ES SO CLE D L WEST 419 SYSTEM MICROLIGHT User Manual amp Product Guide 002 950 Fiberglass Boat Repair Maintenance User Manual amp Product Guide WEST SYSTEM Epoxy is a versatile high quality two part epoxy that is easily modified for a wide range of coating and adhesive applications It is used for construction and repairs requiring Superior moisture resistance and high strength It bonds to fiberglass wood metal plastics fabrics and other composite materials and is especially suited for marine applications This manual is designed to help you become familiar with WEST SYSTEM products and use them effectively e User Manual provides information about safety handling and the basic techniques of epoxy use Understanding these basic techniques will allow you to tailor WEST SYSTEM products to your exact repair and construction needs These techniques are used In a wide range of repair and building procedures such as those described in detail in WEST SYSTEM instructional publications and DVDs e The Problem Solver will help you identify and prevent potential problems associated with using epoxy e The Product Guide gives you complete
26. ODUCTS APPLICATIONS Instruction We offer a range of detailed publications that can help you get started Our publications include manuals on Fiberglass Boat Repair and Maintenance Wooden Boat Restoration and Repair and Boat construction We also offer a How To DVD which covers everything from basic epoxy handling to advanced epoxy repair techniques See detailed publication descriptions on page 18 For excellent results in addition to proper product selection it is important to know best practices for epoxy use know how use epoxy safely and have the proper tools for your project Application Tools Roller covers mixing sticks mixing cups and plastic spreaders are just a few of the tools we offer that make working with epoxy easier See detailed tool descriptions on page 15 Reinforcing Materials Whether repairing a fiberglass boat or building a wooden canoe reinforcing materials are an important part of many building and repair projects See detailed reinforcing descriptions on page 14 Skin Protection Our personal protective clothing is made out of microporous film laminate material which provides a superior combination of strength barrier protection and breathability See detailed skin protection descriptions on page 17 West System User Manual amp Product Guide 7 Resin 105 Epoxy Resin 105 Resin is a clear low viscosity liquid epoxy resin Formulated for use with WEST S
27. YSTEM Epoxy resin and hardeners are packaged three Group Sizes For one of four WEST SYSTEM hardeners it can be cured in a wide temperature i l GN each container size of resin there is range to form a high strength solid with excellent moisture resistance corresponding sized container of hardener 105 Epoxy Resin when mixed at the proper ratio with a WEST SYSTEM hard When purchasing resin ana hardener be sure ener is an excellent adhesive It is designed specifically to wet out and bond to 2 ers Group Size letter B or C wood fiber fiberglass reinforcing fabrics foam other composite materials and a variety of metals 105 Resin based epoxy will bridge gaps and fill voids when modified with WEST SYSTEM fillers and can be sanded and shaped when cured Estimated Epoxy Coverage for Fabric Application With roller applications it has excellent thin film characteristics allowing Below is an estimation of how much epoxy is needed wet it to flow out and self level without fish eyeing Multiple coats of a 105 out 1 sq ft of fiberglass cloth and apply two fill coats epoxy create a superior moisture barrier and a tough stable base for paints and varnishes Fabric Product Number Fabric weight Mixed Epoxy Needed see page 24 per yd 105 Resin is formulated without volatile solvents and does not shrink after 740 4 07 1 44 02 curing It has a relatively high flash point and no strong solvent o
28. ags in each coat 6 Finish the area with long light even strokes to reduce roller marks Overlap the previously coated area to blend both areas together T Coat as many of these small working areas as you can with each batch If a batch begins to thicken before it can be applied discard it and mix a fresh smaller batch 8 Tip off the coating by dragging a foam roller brush lightly over the fresh epoxy in long even overlapping strokes after each batch is applied Use enough pressure to smooth the stipple but not enough to remove any of the coating Figure 31 Alternate the direction in which each coat is tipped off 1st coat vertical 2nd coat horizontal 3rd coat vertical etc An 800 Roller Cover can be cut into segments to make a tipping brushes Re coating Apply second and subsequent coats of epoxy following the same procedures Re coat when the previous coat is still tacky about as tacky as masking tape To avoid sanding between coats apply all of the coats when previous coats have cured to this tacky stage After the final coat has cured wash and sand it to prepare for the final finish see Surface Preparation Cured Epoxy Final Surface Preparation Proper finishing techniques will not only add beauty to your efforts but will also protect your work from ultraviolet light which will break down epoxy over time The most common methods of finishing are painting or varnishing These coating systems protect the epoxy from ul
29. applying fabrics 808 2 2 ea 808 12 12 ea 809 Notched Spreader Stiff 4 x 4 plastic spreader with 1 8 5 16 and 74 notches on three sides for quickly applying thickened epoxy at a constant rate over large areas Thin straight edge Is ideal for applying layers of reinforcing fabrics 809 1 ea 810 Fillable Caulking Tubes For use with a standard caulking gun Great for injecting large amounts of epoxy laying a lengthy bead of epoxy or making fillets Can be refilled several times before epoxy begins to cure Tubes can be refilled again after cured epoxy is popped out Holds approximately 10 fl oz 810 2 2 ea 810 24 24 ea WEST SYSTEM User Manual amp Product Guide 15 Product Guide 879 Release Fabric Release Fabric is a tough finely woven nylon fabric treated with a release agent It is used to separate the breather fabric and vacuum bag from the laminate in vacuum bagging operations Excess epoxy bleeds through and Is peeled from the cured laminate along with the Release Fabric It s also used in hand lay up applications to allow more squeegee pressure and protect the lay up from contam ination and blush Peels easily and leaves a smooth textured surface ready for bonding sanding or finishing Not recommended for post cure temperatures over 120 F 49 C 879 2 60 wide x 2 yd roll 879 10 60 wide x 10 yd roll 879 18 60 wide x 9 sheet 881 Breather Fabric Breather Fabric is a lightwei
30. ary bonding relies on the chemical bonding of adhesive layers such as the wet lay up of fiberglass laminate in a mold All the layers of adhesive cure together into a single fused layer Epoxy applied over partially cured epoxy will chemically bond with it and is considered a primary bond The ability to chemically bond diminishes 29 Figure 9 Apply resin hardener mixture to the bonding surfaces Gm 2 Figure 10 Apply thickened epoxy to one of the bonding surfaces Figure 11 Clamp components in place before the epoxy gels Figure 12 Remove or shape excess epoxy that squeezes out of the joint 30 as the previous layer of epoxy cures You must then prepare the cured surface for a secondary bond secondary bonding relies on mechanical rather than chemical bonding of an adhesive to a material or cured epoxy surface The adhesive must key into pores or scratches in the surface a microscopic version of a dovetail joint Proper surface preparation provides a texture that will help bond the cured epoxy to the surface Except for bonding to uncured or partially cured epoxy surfaces all epoxy bonds are secondary bonds Clamping Any method of clamping is suitable as long as there is no movement between the parts being joined Common methods include spring clamps clamps and bar clamps rubber bands packaging tape applying weights and vacuum bagging If necessary cover clamp pads with tape or use po
31. at angle using even pressured overlapping strokes Use enough pressure to remove excess epoxy that would allow the cloth to float off the surface but not enough pressure to create dry spots Excess epoxy appears as a shiny area while a properly wet out surface appears evenly transparent with a smooth cloth texture Later coats of epoxy will fill the weave of the cloth 7 Trim the excess Figure 26 and overlapped cloth after the epoxy has reached its initial cure The cloth will cut easily with a sharp utility knife Trim overlapped cloth if desired as follows Place a metal straightedge on top of and midway between the two over lapped edges b Cut through both layers of cloth with a sharp utility knife Figure 27 being very careful not to cut too deeply c Remove the topmost trimming and then lift the opposite cut edge to remove the overlapped trimming Figure 28 d Re wet the underside of the raised edge with epoxy and smooth into place The result should be a near perfect butt joint eliminating double cloth thickness A lapped joint is stronger than a butt joint so if appearance is not important you may want to leave the overlap and fair in the unevenness after coating 8 Coat the surface to fill the weave before the wet out becomes tack free Figure 29 Follow the procedures for final coating in the next section It will take two or three coats to completely fill the weave of the cloth and provide a thick enough co
32. ating to allow for a final sanding that will not affect the cloth Figure 24 Spread the epoxy over the cloth surface with a plastic spreader Figure 25 Squeegee away excess epoxy before it begins to gel 7 wm os Le gt Dx PINEA Figure 26 excess cloth after the epoxy gels Figure 27 Trim overlapped cloth after the epoxy gels Figure 28 Remove the topmost trimming lift the opposite cut edge to remove the overlapped trimming Figure 29 Coat the surface to fill the weave before the wet out becomes tack free 35 36 variation of this method is to apply the fabric after a wet out coat has cured thoroughly and the surface has been prepared for bonding This method assures a thorough wet out of the substrate and fabric and the fabric can still be positioned easily while it is being wet out Wet Method An alternative is to apply the fabric or tape to a surface coated with wet epoxy As mentioned this is not the preferred method especially with large pieces of cloth because of the difficulty removing wrinkles or adjusting the position of the cloth as it is being wet out However you may come across situations such as applying fabric on vertical or overhead surfaces when this method may be useful or necessary 1 Prepare the surface for bonding see Surface Preparation Pre fit and trim the cloth to size Roll the cloth neatly so that
33. bration Easy to use 1 1 mix ratio gives you 46 minute pot life and a long open or working time of 75 minutes at 72 F Reaches an initial cure in 3 4 hours and a workable cure in 10 hours Available in two consistencies G flex 650 Epoxy is a versatile easi ly modified liquid epoxy It is packaged in the Aluminum Boat Repair Kit or individually 650 8 4 fl oz resin 4 fl oz hardener 650 32 16 fl oz resin 16 fl oz hardener Larger sizes available G flex 655 Epoxy Adhesive is a conve nient pre thickened epoxy It is packaged in the Plastic Boat Repair Kit or individually 655 8 4 2 fl oz resin 4 2 fl oz hardener 655 20 1 qt resin 1 qt hardener 655 26 1 gal resin 1 gal hardener Larger sizes available Six109 Epoxy Adhesive A two part thickened epoxy adhesive in conve nient self metering cartridge For permanent waterproof structural gap filling and gluing Bonds to wood fiberglass metals and masonry With the included 600 Static Mixer attached you can dispense fully mixed adhesive right where you need it using a standard caulking gun Trim the mixer tip to suit your job 1 8 diameter tip opening will give you a bead of adhesive about a 40 long Working time is 42 minutes at 72 F cures to a solid in 5 6 hours and takes high loads in 24 hours 610 190 ml resin hardener cartridge 600 2 Static Mixers only 2 ea 600 12 Static Mixers only 12 ea 6 59 Five Minute Adhesive An easy to use fast
34. coats of resin hardener to the area with a disposable brush or roller after you are satisfied with the fairness Allow the final coat to cure thoroughly before final sanding and finishing Note 410 Microlight filler can be affected by the solvents in most paints Surfaces faired with 410 filler must be sealed with epoxy before applying any solvented paints Applying Woven Cloth and Tape Fiberglass cloth is applied to surfaces to provide reinforcement and or abrasion resis tance It is usually applied after fairing and shaping are completed and before the final coating operation It is also applied in multiple layers and in combination with other materials to build composite parts Fiberglass cloth may be applied to surfaces by either of two methods The dry method refers to applying the cloth over a dry surface The wet method refers to applying the cloth to an epoxy coated surface often after the wet out coat becomes tacky which helps it cling to vertical or overhead surfaces Since this method makes it more difficult to posi tion the cloth the dry method is the preferred method especially with thinner cloth Dry Method 1 Prepare the surface as you would for bonding see Surface Preparation 2 Position the cloth over the surface and cut it several inches larger all sides If the surface area you are covering is larger than the cloth size allow multiple pieces to overlap by approximately two inches On sloped or vertical
35. d clamping Cure time dictates how long you must wait before removing clamps or before you can sand or go on to the next step in the project Two factors determine an epoxy mixture s open time and overall cure time hardener cure speed and epoxy temperature 1 Hardener Cure Speed Each hardener has an ideal temperature cure range At any given temperature each resin hardener combination will go through the same cure stages but at different rates Select the hardener that gives you adequate working time for the job you are doing at the temperature and conditions you are working under The Hardener Selec tion Guide and container labels describe hardener pot lives and cure times Pot life is a term used to compare the cure speeds of different hardeners It is the amount of time a specific mass of mixed resin and hardener remains a liquid at a specific temperature a 100g mass mixture in a standard container at 72 F Because pot life is a measure of the cure speed of a specific contained mass volume of epoxy rather than a thin film a hardener s pot life is much shorter than its open time 2 Epoxy Temperature The warmer the temperature of curing epoxy the faster it cures Figure 1 page 23 The temperature of curing epoxy is determined by the ambient temperature plus the exothermic heat generated by its cure Ambient temperature is the temperature of the air or material in contact with the epoxy Air temperature is most often the ambie
36. d for fairing large areas Microlight mixes with greater ease than 407 Low Density Filler or microbal loons and is approximately 30 easier to sand It feathers to a fine edge and is also more economical for large fairing jobs Not recommended under dark paint or other surfaces subject to high temperatures Cures to a light tan color Product Guide Fillers are used to thicken basic resin hardener mixture for specific applications Each filler possesses a unique set of physical characteristics but they can be generally categorized as either Adhesive high density or Fairing low density Filler Selection Guide ADHESIVE FILLERS FAIRING FILLERS a Highest Density Uses Use description desired characteristics Highest Strength Lowest Density Easiest Sanding Resin Hardener mixture thickened with a Filler 404 406 403 405 407 410 High Density pa Silica 3 Blend Low EE EN Bonding Hardware Increased fastener interface and hardware E load capability maximum strength General Bonding Join parts with epoxy thickened to create a structural gap fille strength gap filling Bonding with Fillets Increase joint bonding area and create a kkk Kk structural brace between parts smoothness strength Laminating Bond layers of wood strips veneers planks sheets A kA and cores gap filling strength Fairing Fill low areas and voids with an easily sanded surface A Kk Kk
37. d smooth any bumps or ridges on the surface and remove all dust from the area to be faired 2 Wet out porous surfaces with unthickened epoxy Figure 21 3 Mix resin hardener and 407 Low Density or 410 Microlight filler to a peanut butter consistency The thicker the mixture the easier it will be to sand when cured 4 Trowel on the thickened epoxy mixture with a plastic spreader working it into all voids and depressions Smooth the mixture to the desired shape leaving the mixture slightly higher than the surrounding area Figure 22 Remove any excess thickened epoxy before it cures If the voids you are filling are over 72 deep apply the mixture in several applications or use 206 Slow Hardener or 209 Extra Slow Hardener depending on ambient temperature Note On vertical and overhead surfaces allow the wet out coat to gel before applying fairing compound The fairing compound may sag or slide off the fresh wet out coat Apply the fairing compound while the wet out is still tacky 5 Allow the final thickened epoxy application to cure thoroughly 6 Sand the fairing material to blend with the surrounding contour Figure 23 Begin with 50 grit sandpaper if you have a lot of fairing material to remove Use 80 grit paper on the appropriate sanding block when you are close to the final contour CAUTION Don t forget your dust mask Remove the sanding dust and fill any remaining voids following the same procedure 7 Apply several
38. descriptions of WEST SYSTEM products including selection and coverage guides to help you choose the most appro priate products and product sizes for your project WEST SYSTEM products are available from quality marine chandleries and hardware outlets in many areas For the name of the WEST SYSTEM dealer nearest you or for additional technical product or safety information contact Gougeon Brothers Inc or visit westsystem com Why WEST SYSTEM Epoxy All epoxies are not created equal Epoxy brands can vary widely in their formulations quality of raw materials and their suitability for marine environments It s easy to market an off the shelf industrial epoxy product as a marine epoxy AN DA or formulate an epoxy with one Resistance Resistance or two favorable characteris tics while sacrificing other important characteristics Epoxy Performance 2 e and designing a formula to meet those criteria requires good chem istry rigorous test programs skillful shop work and direct experience with today s high performance boats and other composite structures It s much more difficult balancing all of the physical and mechanical properties necessary for a versatile high quality marine epoxy Defining an epoxy s performance criteria Thermal Properties Reliability and Performance WEST SYSTEM Epoxy was created by Gougeon Brothers sailors builders and formulators who know the engineering and the
39. dor making it 742 6 oz 161 fl oz Safer to work with than polyester or vinylester resins Resin viscosity is approxi Du 270 n mately 1000 centipoise cP at 72 F 22 C 745 10 07 2 05 1 02 Refer to the Selection Guide for the most appropriate hardener for D 727 737 17 07 2 81 fl oz your application 738 23 8 07 3 55 fl oz Includes 1596 waste factor PACKAGE SIZE QUANTITY COATING COVERAGE Saturation coat Buildup coats Resin Hardener Group Resin Quantity Hardener Quantity Mixed quantity porous surfaces non porous surfaces NL e o 51 1 2 qt 1 15 L 90 105 ft 120 135 ft MER 3 2 87 Ib 8 5 10m 11 12 5 m HE 105 A AT Ib dice oum BOT 1 qt 946 ml UMS pu rmt 2 40 Ib ger 1 3 qt 1 26 L 90 105 ft 120 135 ft E s 2 2 e pu 3 1 Ib 9 10 m 11 13 m mM po Tus 1 2 gal 4 551 350 405 ft 462 520 ft L ELI kd 2 2 NER 105 B DD 11 36 Ib 32 37 m 43 48 m gei 195 zem 9993 374 em 209 bes TA 9 50 Ib gt es e b 1 3 gal 4 98 L 370 430 ft 490 550 ft E 2 2 EC 12 25 Ib 85 40 m 45 50 m E poires 5 29 201 1530 1785 ft 2040 2300 ft M m idi 50 02 Ib 142 165 m 190 213 m Amm 105 C 8 20 Ib s ang TES AERE ERES vow 4 35 16 47 L Ns 41 82 Ib 154 5 8 21 91 1675 1955 ft 2235 2520 ft
40. e direction while adding minimum thickness and weight Fiber bundles are held in place by a polyester fill thread for easy handling and wet out 144 000 fibers per inch of tape width 702 12 17 wide x 12 roll 702 50 17 wide x 50 roll 703 12 3 wide x 12 roll 703 50 3 wide x 50 roll 737 Biaxial Fabric 17 oz non woven E glass fabric tay layers 45 fiber orientation For composites repairs and reinforcing Product Fabric Weight Single Layer Thickness Achieves high fiber to resin ratio 740 m with hand wet out 010 737 20 50 wide x 20 yd roll 145 dis ae 713 11 07 012 738 Biaxial Fabric with Mat fies Se 17 oz non woven E glass fabric Two layers 2 45 fiber orientation 729 ou The same as 737 fabric with 5 745 10 07 016 07 54 ft mat backing Approximately 737 17 02 035 23 8 07 34 yd total fabric weight 738 23 8 07 042 738 20 50 wide x 20 yd roll Biaxial Glass 713 Unidirectional Glass Tape Unidirectional 11 1 oz E glass fiber reinforcing tape is used to add strength in one direction but with less stiffness than carbon fiber Easy to handle and wet out 713 50 3 wide x 50 roll 727 Biaxial Tape 17 oz non woven E glass fabric Two layers at 45 fiber orientation are held together by a light stitching Flat non crimped fibers yield reduced print through and higher stiffness than woven fabrics Ideal for repairs tabbing and reinforcing 727 10 4 wide x
41. e last five modified with 422 Barrier Coat Additive provide maximum protection and are generally recommended only for polyester fiberglass hull bottoms prone to gelcoat blistering Complete all fairing and cloth application before beginning the final coating Allow the temperature of porous surfaces to stabilize before coating Otherwise as the material warms up air within the porous substrate may expand and pass from the material out gassing through the coating and leave bubbles in the cured coating Figure 30 Roll lightly and randomly over a small area Spread the epoxy into a thin 1 Prepare the surface for bonding see Surface Preparation even film 2 Mix only as much resin hardener as you can apply during the open time of the mixture Pour the mixture into a roller pan as soon as it is mixed thoroughly 3 Load the roller with a moderate amount of the epoxy mixture Roll the excess out on the ramp part of the roller pan to get a uniform coating on the roller 4 Roll lightly and randomly over an area approximately 2 x2 to transfer the epoxy evenly over the area Figure 30 5 Asthe roller dries out increase pressure enough to spread the epoxy into a thin even Figure 31 Tip off the coating by dragging film Increase the coverage area if necessary to spread the film more thinly and evenly a foam roller brush lightly over the l DER fresh epoxy The thinner the film the easier it is to Keep it even and avoid runs or s
42. ed uneven or un level surfaces 1 Prepare the mounting surface and the hardware base for good adhesion see Surface Preparation 2 Wet out the oversized hole with epoxy Allow the epoxy to soak into the exposed substrate as with faster bonding 3 Coat the bottom contact surface of the hardware with unthickened epoxy Wire brush or sand the wet epoxy into the surface with 50 grit sandpaper 4 nject a non sagging epoxy 404 or 406 mixture into the hole Use enough mixture so there are no voids in the hole after inserting the fastener Coat the bottom of the hardware and the fastener threads with thickened epoxy Figure 17 5 Place the hardware in position Insert and tighten fasteners until a small amount of the mixture squeezes out of the joint Figure 18 6 Remove excess epoxy or shape into a fillet Allow the epoxy to cure at least 24 hours before applying load to the hardware Allow more time in cool weather Casting a Base Use the thickened epoxy to cast a base under the hardware when mounting hardware to a curved or uneven surface or mounting hardware at an angle to the surface 1 Prepare the fasteners holes substrate and base as described above 2 Bond small blocks to the substrate to support the base at the desired height and position e g winch base Figure 19 a 3 Apply enough thickened epoxy to cover the blocks If the gap between the base and the surface is over 2 fill the gap in two separate layers to
43. eliable Technical Support To help you make the most of WEST SYSTEM Epoxy s balanced performance and versatility Gougeon Brothers provides you with one other important ingre dient knowledge Whether your project is large or small WEST SYSTEM tech nical publications and videos offered in this guide provide detailed procedures and instructions for specific repair and construction applications We are always interested in your views and welcome suggestions about our products and service We encourage you to call write with comments Box 908 For the most current product selection visit westsystem com City MI 48707 USA Because Gougeon Brothers Inc cannot control how its products will be used it makes no warranties 866 937 8797 either expressed or implied including no warranties of merchantability and fitness for purpose intended Gougeon Brothers Inc will not be liable for incidental or consequential damages westsystem com a E K 1 b L Product Guide WEST SYSTEM Based on 105 Epoxy Resin WEST SYSTEM Epoxy is a versatile low viscosity epoxy system It is used for boat building composite construction and repairs that require high strength waterproof coating bonding and filling It readily wets out fabrics and porous materials and is easily modified for a wide range of working conditions and applications WEST SYSTEM Epoxy is the world s most reliable and wide
44. ength is the ability of a joint to adequately transfer a load from one part to another depends on the combined effects of three factors GLUE STRENGTH Careful metering and thorough mixing will assure the epoxy mixture cures to full strength the best adhesion and load transfer the joint s bonding surfaces must be properly prepared JOINT AREA The bonding area of the joint must be adequate for the load on the joint and materials being joined Increased overlap scarf joints fillets and reinforcing fibers can be used to increase joint bonding area The procedure for bonding with fillets is the same as normal bonding except that instead of removing the squeezed out thickened epoxy after the components are clamped in position you shape it into a fillet For larger fillets add thickened mixture to the joint as soon as the bonding operation is complete before the bonding mixture becomes tack free or any time after the final cure and sanding of exposed epoxy in the fillet area 1 Bond parts as described in Bonding 2 Shape and smooth the squeezed out thick epoxy into a fillet by drawing a rounded filleting tool 804 Mixing Stick along the joint dragging excess material ahead of the tool and leaving a smooth cove shaped fillet bordered on each side by a clean margin Some excess filleting material will remain outside of the margin Figure 13 Use the excess material to refill any voids Smooth the fillet until
45. er Figure 33 Rinse water should sheet evenly without beading or fish eyeing If rinse water beads up a sign of contamination wipe the area with solvent and dry with a paper towel then wet sand again until beading is eliminated Proceed with your final coating after the surface has dried thoroughly To reduce the possibility of contamination it is a good idea to begin coating within 24 hours of the final sanding See coating manufacturer s instructions for proper surface preparation A good trick used by professionals is to make a test panel to evaluate the degree of surface preparation required and the compatibility of the finish system Finish Coatings Coating Function A finish coating paint or varnish over an epoxy barrier coat protects the epoxy from sunlight as well as decorating the surface In doing so the finish coating extends the life of the epoxy moisture barrier which in turn provides a stable base that extends the life of the finish coating Together the two form a protective system far more durable than either coating by itself Protection from sunlight is a primary consideration in the selection of a finish coating Long term UV protection of the barrier coat depends on how well the finish coating itself resists UV and keeps its pigments or its shield of UV filters on the surface of the epoxy barrier coat A high gloss finish reflects a higher proportion of the light hitting the surface than a dull surface All othe
46. er sensitivity and dexterity and they are more puncture resistant than conventional disposable gloves Large size fits most 832 4 4 pr 832 50 50 pr 834 Lab Coat For upper body protection use the lab coats with gloves to prevent accidental skin and clothing contact with uncured epoxy 834 L 1 ea 834 XL 1 ea 835 Apron For torso protection use the aprons with gloves to prevent accidental contact with uncured epoxy For added protection use with sleeves 835 1 ea 836 Coverall These suits are inexpensive enough to be disposable yet durable enough to be reused again and again For maximum personal protection use coveralls with gloves to prevent accidental contact with uncured epoxy Elastic wrists and ankles help prevent sleeves and pant legs from riding up Coveralls available in large extra large and XXL 836 L 1 ea 836 XL 1 ea 836 XXL 1 ea 838 Sleeves If you need to cover only your arms try these convenient sleeves 18 sleeves with elastic top and cuff Use with coverall and gloves for extra protection 838 2 2 pr Oya VVEST SYST Product Guide EM User Manual amp Prc Product Guide 18 Instruction For more about WEST SYSTEM products or technical information for a building or repair project Gougeon brothers offers a range of detailed publications that can helo get you started Our print publications are available as downloadable PDFs at westsystem com
47. erglass Boat Repair Km Maintenance EH EN Ae EN LAE B Am 002 550 Fiberglass Boat Repair amp Maintenance his is a complete illustrated guide to a variety of fiberglass repair problems including detailed instructions on repairing cracks and holes delamination rot and keel damage It also covers fairing keels hardware bonding final fairing and finishing installing teak veneers and gelcoat blister diagnosis preven tion and repair Softcover 122 pages 002 970 Wooden Boat Resto ration amp Repair This manual shows you how to do professional level repairs and renovations that dramatically extend the life of your wooden boat Dry rot repairs structural frame repairs and plank repairs using modern products and techniques are among the many solutions covered in this fully illustrated manual Softcover 80 pages 000 605 EPOXYWORKS FREE USA and Canada only EPOXYWORKS is a FREE semiannual maga zine published by Gougeon Brothers Inc It discusses building restoring and repairing with epoxy It offers helpful tips the latest techniques projects you can build readers projects and news from the Gougeon research and test labs subscribe to the print edition of EPOXY WORKS by calling Gougeon Brothers at 866 93 879 or by visiting westsystem com or epoxyworks com to fill out the online form Subscriptions do not expire You can also view current or back issues
48. ess you choose to thin the epoxy keep in mind that the strength especially compressive strength and moisture protection of the epoxy are lost in proportion to the amount of solvent added There is a better solution to get good penetration without losing strength or moisture resistance We recommend moderate heating up to 120 F of the project area with a heat gun or heat lamp before applying epoxy On contact with the warmed substrate the epoxy will thin out penetrating cavities and pores and will be drawn even deeper into pores as the substrate cools Although the working life of the epoxy will be considerably shortened slower hardeners 206 207 209 will have a longer working life and should penetrate more than 205 Hardener before they begin to gel When the epoxy cures it will retain all of its strength and effectiveness as a moisture barrier which we feel more than offsets any advantages gained by adding solvents to the epoxy Additives Additives are used to give epoxy additional physical properties when used as a coating Although additives are blended with mixed epoxy in the same two step process as fillers they are not designed to thicken the epoxy Refer to the Additive descriptions Follow the mixing instructions on the individual additive containers Coloring Epoxy WEST SYSTEM pigments are available to color epoxy black white or gray Powdered pigments tempera paint colored tile grout aniline dyes and universal tinti
49. f racing craft that are dry sailed It does not provide antifouling qualities The epoxy graphite mixture cures to a black color Add to mixed resin hardener at the rate of 1096 by volume 172 tablespoons per 8 fl oz of epoxy 12 oz can of 423 will approxi mately one gallon of epoxy 423 12 07 WEST SYSTEM User Manual amp Product Guide 4232 ET ec ug 16 oz 8524 44 oz DATTIONU AT TENTION agoe amd PM 422 Barrier Coat Color Pigments Additive WEST SYSTEM pigments are A proprietary blend designed to improve cured epoxy s mois ture exclusion effectiveness 422 is Used as a barrier coating additive to help prevent gelcoat blistering in polyester fiberglass boat hulls 422 also increases the epoxy s abrasion resistance Cures to a light gray color Add to mixed resin hardener at the rate of 15 to 2096 by volume or 3 tablespoons per 8 fl oz of epoxy 16 oz can of 422 will modify approximately half a gallon of epoxy 422 16 16 oz epoxy based liquid colorants used to tint the epoxy mixture to provide an even color base for the final finish system The colored surfaces also tend to highlight flaws and imperfections Cured pigmented epoxy surfaces are not a final finish surface but require an additional paint or UV filter coating for ultraviolet protection Add to the mixed resin hardener at a rate of approximately one teaspoon of pigment to 8 fl o
50. ght polyester blanket that provides excellent air passage within the vacuum envelope while it absorbs excess epoxy 881 10 45 wide x 10 yd roll pecialty Items A 882 Vacuum Bag Film Clear heat stabilized modified nylon resin film Can be used at temperatures up to 350 F 176 C for typical composite cure cycle times A tough stretchable film for high vacuum pressures 882 20 60 wide x 20 yd roll 883 Vacuum Bag Sealant Mastic tape sealant for airtight seals between vacuum bags and molds Easy to work around difficult angles patching small leaks in the vacuum system 1 wide x 25 roll 885 5 Vacuum Gauge 0 30 Hg mercury vacuum gauge 885 6 Venturi Vacuum Generator Includes silencer Generator develops over 20 inches Hg mercury of vacuum 10 psi at 4 SCFM standard cubic feet per minute and is designed to run off of conventional 9 6 6 9 0 9 9 9 0 9 9 0 0 9 0 0 9 9 0 9 9 0 09 9 9 6 06 shop air compressors delivering at least 65 psi at 3 5 SCFM continuously 885 34 Vacuum Cups and Tubing Includes 3 vacuum cups and 20 of 1 4 I D vacuum tubing 885 Vacuum Bagging Kit A complete starter kit for room temperature repairs and small laminating projects up to 13 square feet 5ome item specifications may vary Kit includes e Venturi Vacuum Generator with Silencer e 3 Vacuum Cups 20 of 1 4 I D
51. h better construction and repair methods In addition to the tests conducted to support in house product development our materials test lab also conducts testing to support our outside builders designers and government organizations in the engi neering of epoxy composite structures Aside from performing a battery of standard ASTM tests we have developed new testing methods to evaluate adhesives and composites Some of these tests like our patented Hydromat Panel test have become industry standards This test uses a special fixture in one of the lab s MTS test machines to simulate the pressure loads a section of a hull would endure in a lifetime on the water In 1999 the American Society for Testing and Materials approved the Hydromat test as an official ASTM standard D6416 This unique testing program is used by designers and builders around the world to evaluate various combinations of sandwich composite materials and epoxy formulations and ultimately build lighter stronger safer structures The information provided by a comprehensive test program along with our own building experience and feedback from our customers contributes to a data base on epoxies and epoxy composites that has been growing since 1969 This knowledge is invaluable for achieving the proper balance of properties required for a versatile high quality marine epoxy and assures that the building and repair information provided by Gougeon Brothers is up to date and r
52. h lacquer thinner acetone or alcohol Follow all safety warnings on solvent containers Clean hardener residue with warm soapy water Clean 207 Hardener residue with lacquer thinner acetone or alcohol Dispose of resin hardener and empty containers safely Puncture a corner of the can and drain residue into the appropriate new container of resin or hardener DO NOT dispose of resin or hardener in a liquid state Waste resin and hardener can be mixed and cured in small quantities to a non hazardous inert solid Removing uncured or non curing epoxy Uncured epoxy is removed as you would spilled resin Scrape as much material as you can from the surface using a stiff metal or plastic scraper warm the epoxy to lower its viscosity Clean the residue with lacquer thinner acetone or alcohol Follow safety warnings on solvents and provide adequate ventilation Allow solvents to dry before re coating Removing fiberglass cloth applied with epoxy Use a heat gun to heat and soften the epoxy Start in a small area a near a corner or edge Apply heat until you can slip a putty knife chisel under the cloth about 250 F Grab the edge with pair of pliers and slowly pull up on the cloth while heating just ahead of the separation On large areas use a utility knife to score the glass and remove in narrower strips Resulting surface texture may be coated or remaining epoxy may be removed as follows Provide ventila tion or wear a respirator whe
53. hin films As a tool gets scuffed and scratched from use it will become more difficult to pop the cured epoxy from the surface 802 Roller Pan Heavy duty flexible plastic roller pan allows you to pop out epoxy after it has cured so the pan can be re used Eliminates the need for liners 1 ea 803 Glue Brushes Handy disposable gt x 6 glue application brushes with a metal handle These brushes are useful in a wide variety of small bonding and coating applications 803 12 12 ea 803 144 144 ea 804 Reusable Mixing Sticks A practical mixing application filleting and cleaning tool Squared beveled end reaches mixing pot corners for thorough mixing and blending in fillers and for cleaning up excess epoxy Use rounded end to shape s radius fillets Cured epoxy pops off easily so they be reused many times 34 wide x 5 804 8 8 ea 804 60 60 ea 805 or 806 Mixing Pots Cured epoxy pops out of these heavy duty reusable plastic mixing pots Convenient batch sizes for most projects Pots are calibrated to mix larger batches 805 16 07 pot 1 ea 806 32 07 pot 1 ea 807 Syringes Reusable syringes that can be loaded with epoxy mixture for injecting Into tight spots Ideal for hardware bonding and small repairs Holds 12 cc about 0 4 fl oz 807 2 2 ea 807 12 12 ea 808 Flexible Plastic Spreader Flexible reusable 32x 6 double edged spreader for flow coating fairing filling and
54. hinner coat allowing air to escape easier 3 Tip off the coating with a roller cover brush to break bubbles See Caution page 23 Air trapped in the material escapes through coating out gassing as the material s temperature is rising CAUSES SOLUTION Pinholes appear in epoxy coating over abraded fiberglass or epoxy surface tension causes epoxy After applying epoxy with an 800 Roller Cover force epoxy into pinholes with a stiff plas 9 2 film to pull away from pinhole tic or metal spreader held at a low or nearly flat angle Re coat and tip off coating after all S before it gels P pinholes are filled Fish eyeing coating 1 Be sure mixing equipment is clean Avoid waxed mixing containers m 2 Be sure surface is properly prepared Use proper grit sandpaper for the type of coating ta Contamination of the coating you are applying See coating manufacturer s instructions for proper surface prepa 2 surface or improper abrasion ration After surface is prepared avoid contamination fingerprints exhaust fumes o for the coating rags with fabric softener silicone Coat within hours of preparation After wet sanding rinse water should sheet without beading beading indicates contamination Wipe with appropriate solvent and re rinse until rinse water no longer beads Hardener has turned red after several years storage 4 Moisture in contact with hard Red color is a normal condition It will
55. in position with blocking Fill the void with thick ened epoxy WM Slightly Above Surface NI ES A Figure 20 Bond threaded rods or studs into the substrate as an alternative for easily removable hardware 33 Figure 21 Wet out porous surfaces before applying fairing compound Figure 22 Apply fairing compound to fill all voids and smooth to shape 2 X gt AL gt Figure 23 Sand cured fairing compound to desired contour 34 Removing Fasteners If you know that you will want to remove the fastener you can coat the threads with wax or mold release contaminating the surface enough to prevent a good bond Remove a permanently bonded fastener by applying heat to the head of the fastener with a soldering iron or propane torch Use a heat shield to protect the surrounding area Heat will travel down the fastener softening the epoxy in contact with it At about 250 F the epoxy should soften enough to allow the fastener to be backed out Allow more time for heat to travel down longer or larger diameter fasteners Fairing Fairing refers to the filling of low areas and the shaping and smoothing of a surface to blend with the surrounding areas and appear fair to the eye and touch After major structural assembly has been completed final fairing can be easily accomplished with WEST SYSTEM Epoxy and low density fillers 1 Prepare the surface as you would for bonding see Surface Preparation San
56. ing and bonding operations Also included are a 2 10 piece of 9 oz fiberglass tape useful for patching reinforcing or abrasion resistance an application brush mixing stick pipe cleaner two cleaning pads and complete instructions The components can be mixed in the disposable package 101 1 Kit 101 T Resin Hardener Packets 101 T Six resin hardener packets only Each pre measured packet contains 16g of 105 Resin and 3 2g of 205 Fast Hardener 19 20 or 0 56 fl oz of mixed epoxy 101 T Pack of 6 Product Guide 55 BOAT Repair Kit ALLUBAPILIM BOAT d PLASTICIBOAT Repair Kit EST SYST EM User Manual amp Product Guide 5 Product Guide WEST SYSTEM Epoxy will cure to a high strength plastic solid at 72 F when you mix specific proportions of liquid epoxy resin and hardener This plastic adheres to a wide range of materials making it ideal for projects that require water and chemical resistance and strong physical properties for structural bonding Select from a range of hardeners and additives that allow you to tailor the mixture s handling characteristics and cured physical properties to suit your working conditions and specific coating or bonding application 2 t KEN 5 296 2 HARDENER HAR DENER 6 West System User Manual amp Product Guide mem SYSTE _ WEST IS Le 2 SYSTEM rm germ E sk f EPOXY RESIN
57. ings to vertical Clings to vertical surfaces surfaces peaks fall over surfaces peaks stand up Coating wetting out Laminating bonding flat General bonding filleting Gap filling filleting USES before bonding applying panels with large surface hardware bonding fairing bonding uneven Y 7 L Ze Figure 5 Stir in small handfuls of filler until the desired consistency is reached 26 fiberglass carbon fiber surfaces and other fabrics Adding Fillers and Additives Fillers Throughout this and other WEsT 5 5 manuals we refer to epoxy or resin hardener mixture meaning mixed resin and hardener without fillers added and thickened mixture or thickened epoxy meaning mixed resin and hardener with fillers added Fillers are used to thicken epoxy for specific applications such as bonding or fairing areas injecting with a syringe After selecting an appropriate filler for your job see Filler Selection Guide page 11 use it to thicken the epoxy mixture to the desired consistency The thickness of a mixture required for a particular job is controlled by the amount of filler added There is no strict formula or measuring involved use your eye to judge what consistency will work best Figure 4 gives you a general guide to the differences between unthickened neat epoxy and the three consistencies referred to in this manual Always Add Fillers in a Two Step Process 1 Mix the des
58. ir from aggressive roller application Waxy film appears on surface of cured epoxy Amine blush formation is a 1 Blush is water soluble Remove with water See Special preparation Cured Epoxy page 28 typical result of the curing process 2 Use 207 Special Clear Hardener 207 Hardener is blush free CAUS SOLU 40 Runs or sags coating User Manue 1 Use 800 Roller Covers and roll the coating out into a thinner film A thin film will flow out much smoother than a thicker film after it is tipped off with the foam roller brush 2 Warm the epoxy to thin it or apply the coating at a warmer temperature See Barrier Coating page 36 Epoxy applied too thickly 1 Apply the coating at a warmer temperature Coating curing too slowly 2 Warm the resin and hardener before mixing to speed the cure in cool weather 3 Switch to a faster hardener if possible See Controlling Cure Time page 24 POSSIBLE CAUSES SOLUTION Fairing Compound epoxy 40 or 410 mixture sags and is difficult to sand 4 Fairing material not thick Add more filler to the mixture until it reaches a peanut butter consistency the more S enough filler added the stiffer and easier it will be to sand SOL Thick fairing compound epoxy 40 or 410 mixture sags 4 Fresh epoxy wet out won t sup Allow the wet out coat to gel before applying the fairing material to vertical surfaces See 5 port weight of fairing a Fairing page 34 Paint var
59. ired quantity of resin and hardener thoroughly before adding fillers Begin with a small batch allow room for the filler 2 Blend in small amounts of the appropriate filler until the desired consistency is reached Figure 5 For maximum strength add only enough filler to completely bridge gaps between surfaces without sagging or running out of the joint or gap A small amount should squeeze out of joints when clamped For thick mixtures don t fill the mixing cup more than 1 3 full of epoxy before adding filler When making fairing compounds stir in as much 407 or 410 as you can blend in smoothly for easy sanding the thicker the better Be sure all of the filler is thoroughly blended before the mixture is applied opread the mixture into a thinner layer either around the inside of the mixing cup or onto a flat non porous surface or palette to extend its working life Thinning Epoxy There are epoxy based products specifically designed to penetrate and reinforce rotted wood Those products basically an epoxy thinned with solvents do a good job of pene trating wood But the solvents compromise the strength and moisture barrier properties of the epoxy WEST SYSTEM Epoxy can be thinned with solvents for greater penetration but this results in similar compromises in strength and moisture resistance Acetone and lacquer thinner have been used to thin WEST SYSTEM Epoxy and duplicate these pene trating epoxies with about the same effectiven
60. ize B containers A package of extension tubes for Group Size A containers is included with the set Group Size C extension tubes are included in the 105 C Resin and in the 207 5 209 SC packages 306 25 Metering Pump For metering 105 Resin and 205 or 206 5 1 ratio Hardeners The 306 25 Pump will reduce mixing time and waste on large projects A carrying handle allows you to move the pump where the work is Reservoirs hold one gallon of resin one quart of hardener Dispenses approximately 0 5 fl oz of resin hardener per pump stroke about 1 qt per minute Metering Scale 320 Small Batch Epoxy Scale For batches smaller than one Mini Pump stroke the 320 scale accurately measures the correct ratio of resin and hardener from 4 4 fl 07 down to just a few drops of mixed product he scale can also be used to confirm the accuracy of your WEST SYSTEM dispensing pumps and to consistently add pigments or other additives The scale comes in conve nient kit for small projects The kit includes dispensing bottles 374 oz and 1 oz plastic mixing cups mixing sticks and pipe cleaners 306 Kit Rebuild Kit For all 306 pumps Includes seals balls gaskets springs high rise tubes with ferrules and new resin and hardener reservoirs with lids Metering Pumps RESIN Product Guide 207 HARDENER rat In 303 Positive Displacement Pump 3 1 This positive displacement metering pump dispense
61. ly used marine epoxy Gflex G flex Epoxy is an easy to use toughened epoxy designed to make structural bonds that absorb the stresses of extraordinary expan sion contraction shock and vibration Excellent adhesive properties allow you to glue a wide range of materials Six10 Adhesive gives you the strength and reliability of a two part WEST SYSTEM Epoxy with the convenience of a single part product Six10 is dispensed with a standard caulking gun Non sagging Six10 bonds tenaciously to wood metals fiberglass and concrete G5 G 5 Five Minute Adhe sive is an easy to use epoxy for quick repairs and general bonding It is a durable water resistant adhesive that bonds to most mate rials Use it for making Jigs and fixtures quickly An exceptionally strong and cost effective five minute epoxy 4 P A i x 5 j RESIN Gflex SYSTEM EST Loire FE EPOXY ADHESIVE b ry HARDENER ga pez d ud Ee 10 ADHESIVE ams alihi Hir ri on hs VER fame Pv 1 4 West System User Manual amp Product Guide G flex Epoxy G flex Epoxies are toughened resilient two part epoxies engineered for a superior to metals plastics glass masonry fiberglass and wet and difficultto bond woods Make structural bonds that absorb the stresses of expansion contraction shock and vi
62. lyethylene sheeting or release fabric under the clamps so they don t inadvertently bond to the surface Staples nails or drywall screws are often used where conventional clamps will not work In a corrosive environment any fasteners left in should be a non corroding alloy such as bronze In some cases the thickened epoxy or gravity will hold parts in position without clamps Avoid excessive clamping pressure Weg Step Bonding Wet out bonding surfaces Apply an unthickened resin hardener mixture to the surfaces to be joined Figure 9 Wet out small or tight areas with a disposable brush Wet out larger areas with a foam roller or by spreading the resin hardener mixture evenly over the surface with a plastic spreader You may proceed with step two immediately or any time before the wet out coat becomes tack free 2 Apply thickened epoxy to one bonding surface Modify the resin hardener mixture by stirring in the appropriate filler until it becomes thick enough to bridge any gaps between the mating surfaces and to prevent epoxy starved joints Apply enough of the mixture to one of the surfaces so that a small amount will squeeze out when the surfaces are joined together with a force equivalent to a firm hand grip Figure 10 Thickened epoxy can be applied immediately over the wet out surface or any time before the wet out is no longer tacky For most small bonding operations add the filler to the resin hardener mixture remaining in the batch
63. n heating epoxy Removing cured epoxy coating Use a heat gun to soften the epoxy about 250 F Heat a small area and use a paint or cabinet scraper to remove the bulk of the coating sand the surface to remove the remaining material Provide ventilation or wear a respi rator when heating epoxy Epoxy Chemistry Epoxy s Cure Stages Mixing 105 Epoxy Resin with a hardener begins a chemical reaction that transforms the combined liquid ingredients to a solid This period of transformation is the cure time As it cures epoxy passes from the liquid state through a gel state before it reaches a solid state Figure 1 Figure 1 As it cures mixed epoxy passes from a liquid state through gel state to a solid a Gel state Liquid Initial cute Solid Open Finalcure 71 a see phase lt Cure time is shorter when 2 gt the epoxy is warmer RECOAT lt lt Cure time is longer when the epoxy is cooler Epoxy Temperature Cure time after mixing Liquid Open Time Open time also working time or wet lay up time is the portion of the cure time after mixing that the resin hardener mixture remains a liquid and is workable and suitable for application All assembly and clamping should take place during the open time to ensure a dependable bond Gel Initial Cure Phase The mixture passes into an initial cure phase also called the green stage when it begins to gel or
64. ng pigment can be added to the epoxy mixture to tint it any color Acrylic paste pigments available from marine chandleries can also be used to tint the mixture as long as they are speci fied for use with polyester or epoxy resin 423 Graphite Powder will also color the epoxy black or impart darker shades to colors Generally coloring agents can be added to the mixed epoxy up to 5 by volume with minimal effect on the cured epoxy s strength Always make test samples to check for desired color and opaqueness and for proper cure None of these coloring additives provide UV resistance to the cured epoxy so limit their use to areas not exposed to sunlight unless additional UV protection is applied 2f Figure 6 Clean the surface Use solvent if necessary to remove all contaminates Figure 7 Dry the surface Allow wet surfaces to dry thoroughly or use heat or a fan to speed drying e 2 X ud gt Figure 8 Sand non porous surfaces Provide a texture for epoxy to key into 28 Whether you are bonding fairing or applying fabrics the success of the application depends not only on the strength of the epoxy but also on how well the epoxy adheres to the surface to which it is being applied Unless you are bonding to partially cured epoxy the strength of the bond relies on the 5 ability to mechanically key into the surface That is why the following three steps of surface preparation a
65. nish or gelcoat will not set up over epoxy Allow the final epoxy coat to cure thoroughly Allow several days if necessary for slow Epoxy not completely cured hardeners at cooler temperatures Apply moderate heat to complete the cure if necessary see Controlling Cure Time page 24 LO 3 E mE 1 Use a different type of paint Some paints and varnishes may be incompatible with E incompatible with some hardeners If unsure test for compatibility on a coated piece of scrap material a dd 2 Use 207 Hardener It is compatible with most paints and varnishes Epoxy surface thoroughly Remove the amine blush and sand the surface thoroughly before applying paints or var prepared nishes See Final Surface Preparation page 37 Epoxy became very hot and cured too quickly 1 Mix smaller batches 4 Batch too large or left in mix 2 pot too deng 2 Transfer the mixture to a container with more surface area such as a paint roller tray imme T diately after mixing See Controlling Cure Time page 24 Dispensing and Mixing page 25 2 25 e too warm for the a Use 206 Slow or 209 Extra Slow Hardener in very warm weather S Application too thick Apply thick areas of fill in several thin layers Bubbles formed in coating over porous material bare wood or foam 1 Coat the wood as its temperature is dropping after warming the wood with heaters or during the later part of the day 2 Apply a t
66. nt temperature unless the epoxy is applied to a surface with a different temperature Generally epoxy cures faster when the air temperature is warmer Exothermic heat is produced by the chemical reaction that cures epoxy The amount of heat produced depends on the thickness or exposed surface area of mixed epoxy In a thicker mass more heat is retained causing a faster reaction and more heat The mixing container s shape and the mixed quantity have a great effect on this exothermic reaction A contained mass of curing epoxy 8 fl 07 or more in a plastic mixing cup can quickly generate enough heat to melt the cup and burn your skin However if the same quantity is spread into a thin layer exothermic heat is dissipated and the epoxy s cure time is determined by the ambient temperature The thinner the layer of curing epoxy the less it is affected by exothermic heat and the slower it cures Adapting to Warm and Cool Temperatures In warm conditions gain open time by using a slower hardener Mix smaller batches that can be used up quickly or pour the epoxy mixture into a container with greater surface area a roller pan for example thereby allowing exothermic heat to dissipate and extending open time The sooner the mixture is transferred or applied after thorough mixing the more of the mixture s useful open time will be available for coating lay up or assembly In cool conditions use a faster hardener or use supplemental heat to
67. of EPOXYWORKS online at epoxyworks com and follow us on Facebook at facebook com epoxy works Digital only subscriptions are available by emailing epoxyworksQgougeon com E den me z a OO We Perm cem Perfect Epoxy for an imperfect world na i 59 036 en EM cia B Ba mE RR rex K Tow dee WELT SSES Hi v gl ac tne pus rm Fired ug ar e SFL EF a ae One i Facebook Product Guide westsystem com Our website is a great resource for product information technical information such as SDS how to videos customer projects the latest updates and dealer information Search our extensive database for articles on boat repair and construction techniques and materials home and architecture building and restoring vehicles of every kind and the arts Safety Data Sheets safety Data Sheets SDS for specific WEST SYSTEM products are available at westsystem com through WEST SYSTEM distributors or by contacting Gougeon Brothers Inc For additional information about the use or suitability of WEST SYSTEM products contact the Gougeon Technical Staff at 866 937 8797 West System User Manual amp Product Guide 19 1 Avoid contact with resin hardeners mixed epoxy and sanding dust from epoxy that is not fully cured Wear protective gloves and clothing whenever you
68. onding but it is water soluble and can easily be removed It s a good idea to assume it has formed on any cured epoxy surface To remove the blush wash the surface with clean water not solvent and an abrasive pad such as Scotch brite 7447 General Purpose Hand Pads Dry the surface with paper towels to remove the dissolved blush before it dries on the surface Sand any remaining glossy areas with 80 grit sandpaper Wet sanding will also remove the amine blush If a release fabric is applied over the surface of fresh epoxy amine blush will be removed when the release fabric is peeled from the cured epoxy and no additional sanding is required Epoxy surfaces that are still tacky may be bonded to or coated with epoxy without washing or sanding Before applying coatings other than epoxy paints bottom paints varnishes gelcoats etc allow epoxy surfaces to cure fully then wash and sand Hardwoods Sand with 80 grit paper Teak Oily Woods Wipe with acetone 15 minutes before coating allowing the solvent to evaporate before coating Use G flex epoxy for bonding Porous Woods No special preparation needed If surface is burnished possibly by dull planer or saw blades sand with 80 grit paper to open pores Remove dust Steel Lead Remove contamination sand or grind to bright metal coat with epoxy then wet sand freshly applied epoxy into surface Re coat or bond after first coat gels Aluminum Remove contamination sand
69. or general coating and bonding applications in extremely warm and or humid conditions or when extended working time is desired at room temperature Provides approximately twice the working time of 206 Slow Hardener 105 209 forms a high strength moisture resistant solid with excellent bonding and barrier coating properties Not intended for clear coating Mix ratio 3 parts resin 1 part hardener Pot life at 72 F 22 C 40 to 50 min at 95 F 35 C 15 to 20 min Cure to a solid state at 72 F 22 C 20 to 24 hrs at 95 F 35 C 6 to 8 hrs Cure to working strength at 72 F 22 C 4 to 9 days Min recommended temp 70 F 21 C 207 Special Clear Hardener 20 Special Clear Hardener was developed for coating and fiberglass cloth application where an exceptionally clear moisture resis tant clear carbon fiber or natural wood finish is desired 20 Hardener will not blush or turn cloudy in humid conditions Thin film appli cations roll out and tip off smoothly requiring less sanding in preparation for finish coatings Professional and first time builders like 207 because it is reliable and easy to use Three coats or more can be applied in one day without additional surface preparation Fewer coats are required to fill fiberglass weave and in most cases the final coating can be sanded the following day Builders also appreciate the excellent fiberglass wet out characteristics achieved with 105 207 yet it won t drain from ver
70. r combinations of different mate rials Methods of epoxy application and clamping will differ depending on what you are laminating Because of large surface areas and limitations of wet lay up time roller application is the most common method for applying epoxy A faster method for large surfaces is to simply pour the resin hardener mixture onto the middle of the panel and spread the mixture evenly over the surface with a plastic spreader Apply thickened mixtures with an 809 Notched Spreader Using staples or screws is the most common method of clamping when you laminate a solid material to a solid substrate An even distribution of weights will work when you are laminating a solid material to a base that will not hold staples or screws such as a foam or honeycomb core material Vacuum bagging is a specialized clamping method for laminating a wide range of mate rials Through the use of a vacuum pump and vacuum bag film the atmosphere is used to apply perfectly even clamping pressure over all areas of a panel regardless of the size shape or number of layers Bonding with Fillets fillet fil it is a cove shaped application of thickened epoxy that bridges an inside corner joint It is excellent for bonding parts because it increases the surface area of the bond and serves as a structural brace All joints that will be covered with fiberglass cloth will require a fillet to support the cloth at the inside corner of the joint Joint str
71. r things being equal a white especially a glossy white coating will last the longest Coating Compatibility Most types of coatings are compatible with epoxy Thoroughly cured epoxy is an almost completely inert hard plastic Most paint solvents will not soften swell or react with it One part polyurethanes and polyester gelcoat can be affected by epoxy amines and if used must be applied when the epoxy is thoroughly cured generally after two weeks at room temperature A thorough cure can be achieved much quicker with elevated temperature post curing Post curing will also improve epoxy s thermal properties and is recommended if dark paint is to be applied over epoxy Finish Coating Types Latex paints are largely compatible with epoxy even partially cured epoxy and they do an adequate job of protecting the epoxy barrier from UV radiation In many architectural appli cations a latex paint may be the most suitable coating to use Their durability is limited Alkyd finishes enamel alkyd enamel marine enamel acrylic enamel alkyd modified epoxy traditional varnish and spar varnish offer ease of application low cost low toxicity and easy availability Their disadvantages are low UV resistance and low abra sion resistance Make a test panel to ensure compatibility One part polyurethanes offer easy application cleanup and better properties than alkyds They are also more expensive and some may be incompatible with amine cure epoxy
72. re a critical part of any secondary bonding operation For good adhesion bonding surfaces should be 1 Clean Bonding surfaces must be free of any contaminants such as grease oil wax or mold release Clean contaminated surfaces with lacquer thinner acetone or other appropriate solvent Figure 6 Wipe the surface with paper towels before the solvent dries Clean surfaces before sanding to avoid sanding the contaminant into the surface Follow all safety precautions when working with solvents Dry All bonding surfaces must be as dry as possible for good adhesion neces sary accelerate drying by warming the bonding surface with a hot air gun hair dryer or heat lamp Figure 7 Use fans to move the air in confined or enclosed spaces Watch for condensation when working outdoors or whenever the temperature of the work environment changes Sanded Sand smooth non porous surfaces thoroughly abrade the surface Figure 8 80 grit aluminum oxide paper will provide a good texture for the epoxy to key into Be sure the surface to be bonded is solid Remove any flaking chalking blistering or old coating before sanding Remove all dust after sanding Cured Epoxy Amine blush may appear as a wax like film on cured epoxy surfaces except for epoxy 207 Special Clear Hardener It is a byproduct of the curing process and may be more noticeable in cool moist conditions Amine blush can clog sandpaper and inhibit subsequent b
73. s three parts resin and one part hard ener 3 1 by volume It consists of two sepa rate parallel pump systems one for the resin and one for the hardener The two systems are operated simultaneously by a single lever pump delivers 2 3 fl oz of resin and hardener per full stroke of the dispensing lever reservoirs hold two gallons of resin and one gallon of hardener 305 Positive Displacement Pump 5 1 oimilar to 303 Positive Displacement Pump described above the 305 pump is designed to accurately dispense WEST SYSTEM resins and hardeners at 5 1 by volume TI f y EM User Manual amp Product Guide 13 14 Woven E Glass Glass Fabrics Woven E glass fabrics are ideal for building composite laminates and repairing fiberglass structures May also be used to provide an abrasion resistant covering for wooden struc tures When wet out the 4 and 6 oz fabrics become transparent allowing a clear natural wood finish Perfect for stripper canoes May be painted or varnished 740 10 4 07 50 wide x 10 yd roll 740 20 4 07 50 wide x 20 yd roll 742 10 6 oz 60 wide x 10 yd roll 742 20 6 0z 60 wide 20 yd roll 745 10 10 oz 60 wide x 10 yd roll 745 20 10 oz 60 wide x 20 yd roll 745 30 10 oz 30 x 30 sheet Unidirectional Carbon Tapes Unidirectional 11 1 oz carbon fiber reinforcing tapes are used for selective reinforcement to improve tensile strength and stiffness in on
74. sealable food storage bags with one corner cut off may also be used 3 Clean up the remaining excess material outside of the margin by using a mixing stick or a putty knife Figure 14 Fiberglass cloth or tape may be applied over the fillet area before the fillet has cured or after the fillet is cured and sanded 4 Sand smooth with 80 grit sandpaper after the fillet has fully cured Wipe the surface clean of any dust and apply several coats of resin hardener over the entire fillet area before final finishing Bonding Fasteners and Hardware Installing screws and other threaded fasteners with WEST SYSTEM Epoxy dramatically improves load carrying capacity by spreading the fastener s load into a greater area of the substrate There are several methods or levels of hardware bonding depending on the loads on the hardware Basic Fastener Bonding For improved pullout strength and waterproof connections the easiest fastener bonding method is to simply wet out stripped fastener holes and new pilot holes before installing the screws Epoxy penetrates the fiber around the hole effectively increasing the fastener diameter Epoxy also provides a stronger interface with the fastener threads than wood fiber and keeps out water 1 Wet out a standard size pilot hole Work the mixture well into the hole with a pipe cleaner or syringe Figure 15 Thicken a second coat of epoxy as necessary for stripped or oversized holes 2 Insert the fastener in
75. systems such as WEST SYSTEM Epoxy although 207 Hardener may offer better compatibility Be sure epoxy has cured thoroughly Make a test panel to ensure compatibility Epoxy paints are available in one part and two part versions Two part epoxies offer many characteristics similar to the higher performance polyurethanes They are durable and chemical resistant but offer limited UV protection compared to the linear polyure thanes Make a test panel to ensure compatibility Two part linear polyurethane LP paints offer the most durable protection avail able LPs are available as pigmented or clear coatings and offer excellent UV protec tion gloss retention abrasion resistance plus compatibility with epoxy However compared to other types of coatings they are expensive require more skill to apply and present a greater health hazard especially when sprayed Make a test panel to ensure compatibility Bottom paints are available in a variety of formulations Most bottom paint systems are compatible with epoxy and can be applied directly over a prepared epoxy barrier coat If you are unsure of compatibility or have curing or adhesion problems with a specific bottom paint use only a primer recommended for that bottom paint over the barrier coat Follow the recommendations given for preparation of fiberglass surfaces Other paints including marine LP s and primers are not recommended for use below the waterline Primers are usually not needed
76. that was used for the wet out Mix enough resin hardener for both steps Add the filler quickly after the surface is wet out and allow for a shorter working life of the mixture 3 Clamp components Attach clamps as necessary to hold the components in place Use just enough clamping pressure to squeeze a small amount of the epoxy mixture from the joint indicating that the epoxy is making good contact with both mating surfaces Figure 11 Avoid using too much clamping pressure which can squeeze all of the epoxy mixture out of the joint 4 Remove or shape excess adhesive that squeezes out of the joint as soon as the joint is secured with clamps An 804 mixing stick is an ideal tool for removing the excess Figure 12 Allow to cure thoroughly before removing clamps Single Step Bonding single step bonding is applying the thickened epoxy directly to both bonding surfaces without first wetting out the surfaces with neat resin hardener We recommend that you thicken the epoxy no more than is necessary to bridge gaps in the joint the thinner the mixture the more it can penetrate the surface and that you do not use this method for highly loaded joints especially when bonding end grain or other porous surfaces Laminating The term laminating refers to the process of bonding numbers of relatively thin layers like plywood veneers fabrics or core material to create a composite A composite may be any number of layers of the same material o
77. the hole and allow the epoxy to cure Advanced Fastener Bonding For greater strength and stability drill oversized holes to increase the exposed substrate area and the amount of epoxy around the fastener 1 Drill oversized holes 2 3 3 4 the depth of the fastener The hole diameter is 14 larger than the fastener diameter Figure 16 2 Drill a normal sized pilot hole at the bottom of the oversized hole to the full length of the fastener The normal sized pilot hole serves to hold or clamp the hardware in position until the epoxy cures If the fastener hardware can be clamped by other means the oversized hole can be extended to the end of the fastener 3 Wet out the holes and the fastener with epoxy Allow the epoxy to thoroughly soak into the exposed substrate 4 Fill the hole with thickened epoxy adhesive filler Use 404 High Density preferred 406 Colloidal Silica 5 Install the fasteners with just enough force to hold the hardware in place Allow the epoxy to cure thoroughly before applying load to the hardware Figure 16 b Bonding Hardware Bonding hardware goes a step beyond bonding the fasteners only By bonding the hardware base directly to the surface you further increase hardware load capacity and provide a solid bearing surface for the hardware It also seals the substrate underneath and is a stronger longer lasting attachment than bonding the fasteners only It is espe cially useful to mount hardware on curv
78. tical surfaces like the very slow curing low viscosity epoxies 105 20 has strong physical properties so it can be used as a structural adhesive for gluing and laminating It has excellent compatibility with paints and varnishes An ultraviolet inhibitor in 20 helps provide a beautiful long lasting finish when used with quality UV fil tering top coat Mix ratio 3 parts resin 1 part hardener Pot life at 72 F 22 C 20 to 26 min Cure to a solid state 10 to 15 hrs Cure to working strength 1 to 4 days Min recommended temp 60 F 16 C laar 13 Q LI t Dd NAA MV oar 3 Ico V VEO OYTO EN OUI Vial ludi 9 Product Guide Fillers Adhesive Fillers 403 Microfibers 405 Filleting Blend 403 Microfibers a fine fiber blend is used as a This strong wood toned filler is good for thickening additive that builds volume quickly and use in glue joints and fillets on natural blends easily to create a multipurpose adhesive ly finished wood It mixes easily with especially tor bonding wood Epoxy thickened with epoxy and has good gap filling proper Microfibers has good gap filling qualities while ties It cures to a dark brown color and retaining excellent wetting penetrating capability can be used to modify the color of other Cures to an off white color WEST SYSTEM fillers WEST WEST WEST YSTEM
79. to a bright finish and then wet sand Follow kit directions Use G flex epoxy especially on flexible pieces Fiberglass Polyester Clean contamination with a silicone and wax remover such as DuPont Prep Sol 39195 Sand with 80 grit paper to a dull finish Plastic Clean plastics except for polycarbonate with isopropyl alcohol to remove contamination Sand all plastics including polycarbonate with 80 grit sandpaper to provide texture for good adhesion Flame treat Pass the flame of a propane torch across the surface quickly about 12 inches per second ABS and PVC for additional benefit HDPE high density polyethylene and LDPE low density polyethylene must be flame treated for good adhesion Use G flex epoxy for plastics Bonding Gluing This section describes two methods of structural bonding Two step bonding is the preferred method for most situations because it promotes maximum epoxy penetration into the bonding surface and prevents epoxy starved joints Single step bonding can be used when joints have minimal loads and excess absorption into porous surfaces is not a problem In both cases epoxy bonds best when it is worked into the surface with a roller or brush Before mixing epoxy check all parts to be bonded for proper fit and surface preparation see Surface Preparation gather all the clamps and tools necessary for the operation and cover any areas that need protection from spills Primary Secondary Bonding Prim
80. traviolet light and require proper preparation of the surface before application Preparation for the final finish is just as important as it is for re coating with epoxy The surface must first be clean dry and sanded 1 Allow the final epoxy coat to cure thoroughly 2 Wash the surface with a Scotch brite pad and water to remove amine blush Dry with paper towels 37 Figure 33 Rinse the surface with fresh water after sanding 38 3 Sand to a smooth finish Figure 32 If there are runs or sags begin sanding with 80 grit paper to remove the highest areas Sand until the surface feels and looks fair Complete sanding with the appropriate grit for the type of coating to be applied check coating instructions Paint adhesion relies on the mechanical grip of the paint keying into the sanding scratches in the epoxy s surface If a high build or filling primer is to be applied 80 100 grit is usually sufficient 120 180 grit may be adequate for primers and high solids coatings Finishing with 220 400 grit paper will result in a high gloss finish for most paints or varnishes Grits finer than this may not provide enough tooth for good adhesion Wet sanding is preferred by many people because it reduces sanding dust and it will allow you to skip Step 2 See coating manufacturer s instructions for proper surface preparation 4 After you are satisfied with the texture and fairness of the surface rinse the surface with fresh wat
81. ucts POR Page 2 Check for proper resin and hardener Resin will not cure properly with other brands of hardener or with polyester catalysts Bond Failure Insufficient cure See above de ee Wet out bonding surfaces before applying thickened epoxy Re wet very porous surfaces p and end grain See Two step Bonding page 30 2 leaving a void at the joint 5 S o Set i ean and sand the surface following the procedure on page 28 Sand wood surfaces S Contaminated bonding surface after planing or joining Bonding area too small for the T a Bl load on the joint Increase bonding area by adding fillets bonded fasteners or scarf joints Too much clamping pressure Use just enough clamping pressure to squeeze a small amount of epoxy from the joint squeezed epoxy out of the joint See Clamping page 30 Clear coating turned cloudy Moisture from condensation or 1 Apply moderate heat to partially cured coating to remove moisture and complete cure very humid conditions reacts See out gassing caution page 23 with components in uncured 2 Use 207 Special Clear Hardener for clear coating applications and for bonding thin hardener veneers where epoxy may bleed through to the surface SOLUTION 1 Apply coating at warmer temperature epoxy is thinner at warmer temperatures 2 Apply epoxy in thin coats 3 Apply moderate heat to release trapped air and complete cure See Caution page 23 POSSIBLE CAUSES Entrapped a
82. ugeon Brothers technical staff 866 937 8797 The epoxy mixture has not cured after the recommended cure time has passed 1 Remove epoxy Do not apply additional material over non curing epoxy See Removing Off ratio too much or too little epoxy page 22 hardener will affect the cure 2 Check correct number of pump strokes use equal strokes of resin and hardener DO time and thoroughness of the NOT add extra hardener for faster cure om 3 Check for correct pump 5 1 or 3 1 ratio 4 Check pump metering ratio see pump instructions See Dispensing page 25 1 Allow extra curing time in cool weather 2 Apply heat to maintain the chemical reaction and speed the cure Raise the temperature 8 Low temperature epoxy above the hardener s minimum recommended cure tem perature NOTE Unvented kero rech slower at low 5 sene or propane heaters can inhibit the cure of epoxy and contaminate epoxy surfaces 5 3 Use a faster hardener designed to cure at lower temperatures See Controlling Cure 5 page 24 E 1 Remove epoxy Do not apply additional material over non curing epoxy See Removing Epoxy page 22 Insufficient mixing 2 Mix resin and hardener together thoroughly to avoid resin rich and hardener rich areas 3 Add fillers or additives after resin and hardener have been thoroughly mixed See Mixing page 25 1 Remove epoxy Do not apply additional material over non curing epoxy See Removing Incorrect prod
83. uring of the epoxy can be traced to the wrong ratio of resin and hardener To simplify dispensing and reduce the possibility of errors we recommend using calibrated WEST SYSTEM Mini Pumps to meter the correct working ratio of resin to hardener Pump one full pump stroke of resin for each one full pump stroke of hardener Depress each pump head fully and allow the head to come completely back to the top before beginning the next stroke Partial strokes will give the wrong ratio Read the pump instructions before using pumps Figure 3 Stir resin and hardener together thoroughly at least 1 minute longer in cooler temperatures Before you use the first mixture on a project verify the correct ratio according to the instructions that come with the pumps Recheck the ratio anytime you experience prob lems with curing If you have any ques tions about selecting or using WEST SYSTEM products that are not answered in this man Dispensing Without Mini Pumps Weight Volume Measure To measure 105 Resin and 205 or 206 Hardener by weight or volume combine 5 parts resin with 1 part hardener To measure 105 Resin and 207 or 209 Hardener by volume combine 3 parts resin with 1 part hardener To measure 207 or 209 Hardener by weight combine 3 5 parts resin with 1 part hardener The weight measurement for these ratios is slightly different from the volume ratio due to hardener density First Time Users If this is the first time you have used
84. you are satisfied with its appearance A mixing stick will leave a fillet with about 3 3 radius For Pre coating porous surfaces with neat ep oxy before applying a thickened epoxy adhesive or fairing compound improves adhesion Neat epoxy penetrates and keys into surface pores and end grain better than thicker epoxy Joint Strength Figure 13 Shape and smooth the fillet with a rounded filleting tool 31 1 ie 1 LI 7 1 d d e H D z 7 d Ae z D RH ngi D i 23 r Hr Tw gt gt i gt t a b 4 Figure 14 Clean up the excess epoxy outside of the fillet margin Epoxy Annulus Figure 15 Wet out a standard pilot hole and install the fastener Figure 16 Drill oversized holes to increase the exposed substrate area and the amount of epoxy around the fastener 32 larger fillets an 808 Plastic Spreader cut to shape or bent to the desired radius works well Apply additional thickened epoxy to fill voids or make larger fillets Apply the mixture along the joint line with the rounded mixing stick using enough mixture to create the desired size of fillet For longer or multiple fillets empty caulking gun cartridges or disposable cake decorating bags can be used Cut the plastic tip to lay a bead of thickened epoxy large enough for the desired fillet size Heavy duty
85. z of epoxy More pigment will increase opaqueness and mixture viscosity One 4 fl 07 bottle will tint approximately 172 gal of epoxy 501 White Pigment 4 fl oz 502 Black Pigment 4 fl oz 503 Gray Pigment 4 fl oz Metering Pumps 300 Mini Pump Set 300 Mini Pumps are designed for convenient and accurate metering of Group Size A B and C WEST SYSTEM 105 Resin based epoxy The 300 Mini Pump Set contains one resin pump and two hardener pumps Pumps uii 5 TS mount directly on the resin and hardener SYSTEM containers and eliminate the mess involved i or 1 with measuring by weight or volume i TEM 4 5 300 Mini Pumps are calibrated to deliver the proper working ratio with one full pump stroke of resin for each one full pump stroke of hardener 105 205 206 pumps deliver approximately 0 8 fl oz of resin hardener with one full stroke of each pump 105 207 209 pumps deliver approximately 0 9 fl oz of resin hardener with one full stroke of each pump eo HARDENER Made of durable polypropylene the pumps give years of dependable service Read and follow the priming ratio verification and oper ating instructions that come with the pumps Large Capacity Pumps 306 23 Metering Pump oimilar to 306 25 Metering Pump described above For metering 105 Resin and 207 opecial Clear or 209 Extra Slow 3 1 ratio Hardeners Can be converted to 5 1 ratio As packaged the pumps are ready to install on the Group S

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