KCam User Manual
Contents
1. ten AT 28 PSDOUUU ns nn n urai rta 9 28 REGISEAUON M 28 Supported Pre 29 Supported WIC 29 User Defined M codes EHE 29 Supported DXF version R12 5 2212 100000 enn ne entes enne seen 30 Hardware Conngetlonscous use uu Rus ecto nae was wesc QE 30 Glossa MEL cc PUE coU 31 Resistens IC al neeese A E TE 31 DALE W ATE a ave S E 31 KCam User Manual Introduction Thank you for choosing KCam KCam is designed to make your CNC experience simple and enjoyable A wide variety of features are available to perform functions typically only found in more expensive CNC packages Typical CNC applications for KCam include Routing Signage 3D Milling PCB Milling and Drilling and Plasma Cutting KCam is designed to read files created by your design applications and control the CNC equipment attached to your PC Printer port Features File formats supported GCode DXF HPGL Excellon Gerber Parallel Port motor controller access Serial Port motor controller access MaxStepper hardware only 2D and 3D graphical plots of data Gcode data entry Gcode data conversions Gcode macro sub programs Manual jogging controls Keyboa2. HPGL Gerber Import Options I Add Dwell Commands Add Spindle On Offs Default Dwell Time 2 00 GCode Plotting Options I andy are incremental Apply Cancel Colors Travel MM Po Cut 1 m Legend I Cut 2 m Cursor LET KCam User Manual Add Dwell Commands When Checked import functions will insert dwell time and dwell execution commands into the Gcode Add Spindle On Offs When Checked import functions will insert and M05 commands into the Gcode to control the spindle before and after each Z axis plunge This feature is designed for torch users to engage the torch prior to each cut Default Dwell Time This is the dwell time parameter that importing functions use for inserting dwell instructions into the Gcode J are Incremental When Checked the Gcode Arc commands use the and J values in an incremental format This effects importing DXF HPGL files and plotting Gcode data Colors The Plot window colors can be modified by setting the color values for the associated color boxes Options DXF tab amp Options Gcode OXF HPGL Gerber Sort Entities Cut 2 Layer When Checked Entities are sorted by position prior to Sort Layers Ignore 2 Depth generating the Gcode data during a DXF file import process P Line Tolerance 0 001 v asses n x to Depth m
3. 4 CONTROL SOFTWARE USER MANUAL Revision 4 0 24 2007 KellyWare 2 6 2007 KCam User Manual Table of Contents ntrod CtlOnis tatit gs a ee a 4 Quick Start wath KC ame een E oe RH D down Men s 5 mette dst dosnt telle ten cased soo ct iste Bosse es oe ries 6 I 6 New Gcode Ele us eet ona uoti MO 6 Open Geode BIG suo teen deoa occ ones eas or edd 6 Save Goode Bile te WB VE 7 eee c ae a eee iS aaia 7 Imporb DXF OO RN 7 Import APO A EM abe N a fosa eae din a T 7 m ER T leue cod 8 EXBOLD ye o oec auti 8 EXPO DXF Iles a ee unu 8 Export HPGL Tile st n 8 Recent Fil TASt 5i ite ER ETE 8 Prints eiie edite aae RR ee 8 Exitt met erm E E IN MA 8 12 D1K rmt 9 JM 9 NUM dmt o cec eu ou eL qM M D 9 d Sic Sah Latinoam as at Aah om caduta AK rd ea LU e Dres 9 Blob sese eO Dim enimse 9 ri 10 fen Grec 11 Parallel IO DISDIAV sea inca sends isst
4. Using this feature with large files will severely increase the import time but the Gcode will be more efficient Sort Layers j Cancel When Checked layers are sorted alphabetically prior to generating the Gcode data during a DXF file import process Ignore Z Depth When Checked Z axis coordinates in the DXF file are ignored and parameters from the Table Setup are used for setting the depths If unchecked Z coordinates from the DXF file are used if they are present DXF Cut 2 Layer This text parameter determines which layer is used for the Deep Cut Depth when importing DXF files This is useful for cutting through the material on holes and borders in engraving plates Line Tolerance This parameter joins non connected lines together during a DXF Import Lines with adjacent end points that are closer than this parameter will be joined together This function is useful when CAD programs used to create the DXF files do not snap the end points together but instead leave very small gaps between lines If this parameter if too small 000001 it will not join lines If it is too large 1 it may join unwanted lines together It is recommended that its value be small until it is needed Options Excellon tab Options General Gcode DxF Excelon HPGL Gerber Drill Hole Options i Sort by Size Default Bit Size Sort by Size Sort by Location 028
5. LEN 2 g e lot rast Draw Default Scales The number of individual lines 360 degree arc A higher F F 5 Execute Dwells Display Line Nodes Y Misc Settings Clear Error Log File on Startup File m 15 Apply Cancel KCam User Manual number yields an arc or circle with a smoother edge but slower plot updates Force Plot Bit Radius When checked the radius of plot lines will be forced to Bit radius below regardless of the Tool size currently selected in the GCode If unchecked the GCode and the Tool Size setup will determine the plot radius of cutting lines in the Plot window Bit Radius The width of the default tool bit This is used in displaying line width on the Plot window If tool bits are specified in the Tool List window and tool commands are used in Gcode this default value is not used unless the Force Plot Bit Radius above is selected Plot Fast Draw When checked the Plot window data is drawn quickly If Unchecked the tool path can be viewed more easily as the data is slowly redrawn Plot after Load Import When checked the Plot window data is drawn following a Load Import or process function If Unchecked the tool path will not be plotted automatically This setting is useful for very large programs where plotting time can be an issue Execute Dwells When checked the Plot window redraw functio
6. Numerical Format Leading Zeros Trailing Zeros Selected Format Integers Decimals 1 56 1560 j Cancel KCam User Manual When Checked drill holes are sorted by size prior to generating the Gcode data during a Excellon file import process Sort by Location When Checked drill holes are sorted by position prior to generating the Gcode data during a file import process When both size and location sorts are selected holes will be sorted by location first and then size Example all 028 holes will be drilled first sorted by location and then the 040 holes will be drilled sorted by location Default Bit Size This is the tool size that will be used if no tool sizes are available in the files tool header Leading Zeros This parameter sets the numeric format for reading the coordinates from the excellon file When selected it will expect a leading zero format from the data coordinates Trailing Zeros This parameter sets the numeric format for reading the coordinates from the excellon file When selected it will expect a trailing zero format from the data coordinates Integers and Decimals These two parameters set numerical format of the coordinate data from the Excellon data file Typically Excellon files use 2 3 format which represents 2 digits for the integer portion and 3 digits for the decimal portion of the data Leading and Trailing Zero formats
7. Disabled Disabled Disabled E Stop Pressed C Waves airhorn wav The list shows the available events that Eo Soe T sounds can be assigned to To change a Future Bisebled sound for an event double click on the event to open a browse window for file selection You can right click on a selected event to hear gt babes sandr the assigned sound 597 KCam User Manual FUNCTIONS Scale Gcode This function scales the gcode in the editor window A pop up entry box will appear to enter X and Y scale data If the X or Y Scale data is blank or 0 no scaling will be performed Offset Gcode This function offsets the gcode in the editor window A pop up entry box will appear to enter offset data for each axis If the offset data is blank or 0 no offset will be performed for that axis Convert Gcode to Absolute KCAM4 Enter X Scale Cancel KCAM4 Enter X offset Cancel P This function converts the gcode in the editor window to absolute format Convert Gcode to Incremental This function converts the gcode in the editor window to incremental format WINDOW Window List Displays the open child windows If a window is underneath another it can be brought forward by selecting it from the window list HELP Help Contents Opens the help contents file About This function opens the About window The About window shows the software ver
8. Ramp Rate IPM An Axis is a motorized portion of a machine Backlash is the play in the threads between the drive nut and threaded rod on an axis This play causes a loss of distance in a movement when the direction changes CNC is the abbreviation of Computer Numerical Control Or simplified its the computer control of machines The Ramp Rate is the acceleration and deceleration rate of the stepping velocity Its value is given in change of IPM per Inch IPM is the measurement of velocity or speed for an axis It is the abbreviation of Inches Per Minute which is a rate of movement Registering KCam To register your copy of KCam please visit our web site www kellyware com for details To obtain your registration code open http www kellyware com kcam kcam registration htm an internet browser Click on the Purchase hyperlink and select a payment option for an KCam You can enter your credit card information and a VALID email address Please make sure your Email Address is correct and that there or no spam blocking settings in your email client that will interfere with receiving your registration information Once Kellyware has received notice of your payment a personal registration code will be generated and sent to the email address given to PayPal You need to enter the user name and registration code into KCam s Registration form You can find this form by clicking on Help About Registration Your registration code is typica
9. Steps Inch Steps mm vaa St DeauPoiimupaae Poena 10050 5 Lk ete Die ZAxis 380 IPM Enable Z Axis Jog Step Limits Stop CNC Run The number of steps required to Ve EN lone move an axis one inch or one ee millimeter Axis Length The maximum mechanical travel of an axis Axis Invert The axis direction is normal when set to False The axis direction is reversed when set to True 19 KCam User Manual Backlash The distance necessary to overcome play or errors in the axis mechanics due to wear or looseness of components Backlash errors are most visible when an axis changes direction Travel Depth The default Z axis depth for rapid movements Used in engraving for rapid movements without cutting material Normal Cut Depth The default Z axis depth for cutting with 2D imported files Used in engraving for cutting letters and designs Deep Cut Depth The default Z axis depth for cutting through the material with 2D imported files Used in engraving for cutting holes and borders Backlash option When set to False backlash compensation is not used When set to True backlash compensation is used Ramping When set to false the axis start and run at the specified feed rate When set to true the axis start slowly increase speed and finish slowly This functions allows greater axis speeds due to inertial limits of steppers and axis mechanics Ramp Start This sets the starting an
10. 56 Table Setup This function opens the Table setup window The Table setup window allows editing of CNC table parameters Tabl P 5 Table Setup E3 able Setup Parameters Tee Units of Measurement Imperial finches Metric Numeral Format 00 00000 v X Units Of Measurement Axis X Axis Y Axis Z The numerical measurement type Steps Inch 4000 Steps Steps Inch 4000 Steps Steps Inch 4000 Steps Steps Inch 4000 Steps Mi i m et e rs or l n ch e S Axis Length 8 Inches Axis Length 8 Inches Axis Length 3 Inches Axis Length 10 Inches Axis Invert False xi Axis Invert False v Invert False Axis Invert Backlash 0 Inches Backlash 0 Inches Backlash 0 Inches Backlash 0 Inches Numeral Format Feed Rates Depths XX andZ Asis Application Priority Traveling 10 IPM Travel 0 2 Inches Fal Normal v Pre and Post zeros used in TET E e m 4 a ating Cul nenes Ramping True Throttle Parameters formatti ng num bers in the Gcode Jogging 5 IPM DeepCut 01 Inches Ramp Stat 2 IPM Max Throttle 200 Ed l to r Maximum Feed Rates Anis Display Features RampRate 10 IPM In Min Throttle 50 Invert Z Coordinates IPM V Hide Axis Cursor Axis Display Features Cont Limit Switchs 350 URS
11. ASCII file An Isolation Plot will be created if the Isolation option is Checked in Options Gerber Tab A Gerber ASCII file contains 2D plotting data A browsing window will appear to enter the file name and location If the file contains more than one layer a layer selection window will appear In that window you can select which layers you want to import See Gerber Options Note The Gerber Import function only works with Gerber RS274X single layer files A Gerber RS274X file has the aperture list in the file included with the line data If a file is imported without a correct aperture list the resultant gcode data will not be correct Note For trial purposes the Gerber entities will be limited to 100 Please send us comments and suggestions pertaining to the isolation import process Known Issues with Isolation Imports 1 Speed the isolation import function is slow The number of calculations are exponential with polygon count 2 When a corner or side of a polygon is inside two or more other polygons extra cut lines are produced 3 When two intersecting lines have the same slope extra cutting lines are produced Export Export DXF file Exports a DXF ASCII file from the data in the GCode editor The exported DXF file format will be AutoCAD R12 A browsing window will appear to enter the file name and location Line and arc elements in the DXF file will be represented by line segments See Supported DXF Formats for further DX
12. Help File New Gcode file Open Gcode file Save Gcode file Import DXF HPGL Excellon Gerber Export HPGL Recent File List Print Exit Find Replace Plot F4 Gcode F5 CNC Controls F6 Parallel 1 0 Display Save Form View Load Default Form Positions Machine Setups Create New Machine Setup Load Machine Setup Setup Options System Timing Table Setup Port Setup Macro Files Tool List Event Sounds Functions Scale Gcode Offset Gcode Convert to Absolute Convert to Incremental Window Window List Help Help Contents About File New Gcode File Erases current GCode data in the GCode window A message box window will appear to confirm your intentions to erase all the current data loaded in KCam s Gcode window This function will only erase data in memory not any data stored in gcode file on the storage media Open Gcode File Opens an ASCII file which contain G and M codes A browsing window will appear to enter the file name and location KCam User Manual Save Gcode File Saves the current GCode data in the editor window to an ASCII file A browsing window will appear to enter the file name and location Import Import DXF file Imports a DXF ASCII file using the R12 format from AutoCAD A browsing window will appear to enter the file name and location See Supported DXF Formats for further DXF import information Import HPGL Imports a HPGL ASCII file A HPGL
13. This input on the controller advances rotates the stepper motor when pulsed A Direction input is also required to tell the controller which direction to move when the step input is pulsed An Enable input is used to tell the controller to apply current to the motor The Enable function is optional and some controller don t use it If you have a controller that has an Enable input you should use it It will shutdown the motors when they are not in use and protect them from overheating Parallel port mode can be used with port cards other than just a parallel port The Parallel Port Setup allows Bit Mode for assigning access for the step and direction addresses in a unique card Each brand of I O Card has different port addressing schemes and correct settings in KCam must be determined by the end user using documentation for the card Typical Parallel Port Connections LPT CONNECTOR PARALLEL PORT TYPICAL LPT STEPPER CONTROLLER PINE PIN3 PINA PINS PING EIN YENABLE PINS Be PEE ZSTEPPULSE COMMON ZDIRECTION PINL4 ZENABLE A Emi 4 SPINDLEMOTORor AUXILLARYRELAY s XAXISLIMITSWITCHS PINI YAXISLIMITSWITCHS COMMEN PINI3 ZAXISLIMITSWITCHS MOTOR x LIMITS PINSI 25 LOGIC GROUND Y LIMITS XSTEPPULSE gt gt XDIRECTIDN XENABLE YSTEPPULSE YDIRECTION n Z LIMITS COMMO 30 KCam User Manual Glossary Axis Backlash CNC
14. axis direction button and press the key to activate that axis direction A Key Test window 292 KCam User Manual opens during the key assignment to grab the desired key press and determine its ASCII value Restore Defaults This function will return the Jog Keys to the Numerical Keypad keys for jogging Default Keys Numerical Keypad Arrows move the X and Y axis Keys 7 9 1 3 move the X and Y axis together The Numerical Keypad and keys move Z axis up and down respectively The and keys change the feed rate Check Key Value This function will open a test window that shows the ASCII value of keys pressed Port Setup This function opens the port setup window The Port setup window allows editing of the communication port parameters Port I O Controls x tepper LPT Setup LPT infocGenera LPT Parallel Port di Serial Port MaxStepper Parallel Port 10 DLL used C InpQuG2dl Win95 98 G Win95 38 NT The 1 0 DLL one should choose depends on the Operating System choice is given incase problems with ports on some PC s or Operating Systems DK Apply Cancel Port Type The Port Type selects the communication port for accessing the stepper motor controllers Parallel Port I O DLL used The Parallel Port I O DLL used selects to DLL windows uses to access the parallel port Either can be used under Windows 95 and 98 If Windows NT opera
15. current feed rate Y Time Constant box This displays the current Time Constant Clicking on this box allows manual changing of the Time Constant Time Constant buttons A Clicking on these buttons increments or decrements the Time Constant Time Constant Auto Tune button l 57 The Auto tune button performs on the fly ORE System Time Constant adjustments It should only be used when the tool is not cutting material Make sure it is not engaged while cutting materials or motor positions may be compromised After use the axis aie MOTORS ENABLED KCam User Manual positions should be Zeroed for accuracy Motor Enable button The Motor Enable button is a software E Stop It will halt all movements immediately E Stop Switch The E Stop Switch indicator displays the current status of the external E Stop input CNC CONTROLS WINDOW PROCESS CNC Controls STATUS TAB Timer This displays the current process timer value The process time value is reset when the CNC Process is started Estimated Material Process Time This displays the estimated process completion time for the current Gcode The estimated time is calculated during a plot redraw Feed Rate box The Feed Rate box displays the feed rate the motors are moving at This value is calculated from the timing signals sent out the ports Auto Tune button The Auto tune button
16. modified in the Options window 10 KCam User Manual CNC Control This function opens the CNC Control window The CNC control window allows manual and automatic motion control for your axis along with specific information about motion characteristics CNC CONTROLS WINDOW MANUAL TAB Arrow buttons The Arrow buttons will move the Axis when pressed If the Single Step button is engaged the moves will continue for a distance equal to the distance box Single Step button When the Single Step button is engaged the Arrow button movements will continue for the distance specified The distance is specified in the Distance Entry box Distance Entry combo box The distance entered in this box is used for Single Step moves You can use the predetermined numbers or type in your own Move to Home button When the Move to Home button is pressed the CNC tool will move to the Home position for all axis The Home position is specified in the Table Setup window If the Home position entry boxes are blank those axis will not move from their current position Move to Re Tool button When the Move to Re Tool button is pressed the CNC tool will move to the Re Tool position for all axis The Re Tool position is specified in the Table Setup window If the Re Tool position entry boxes are blank those axis will not move from their current position Keyboard Jog button The Keyboard Jog button will open the Keyboard Jog window When the Ke
17. performs on the fly System Time Constant adjustments It should only be used when the tool is not cutting material Make sure it is not engaged while cutting materials or motor positions may be compromised After use the axis positions should be Zeroed for accuracy Motor Enable button The Motor Enable button is a software E Stop It will halt all movements immediately E Stop Switch The E Stop Switch indicator displays the current status of the external E Stop input Program Machine Dist to Go X T Zero x Limit Zero Zero Zero Overide Spindle CW Spindle CCW 4 e Coolant Mist Coolant Flood Tune Ausillary 1 Manual Automatic Timing Process Status Timer 00 00 00 Estimated Material Process Time 00 01 12 MOTORS ENABLED 14 KCam User Manual Keyboard Jog Window While this window is open arrow key presses will move the axis Keyboard Jog Controls The Axis will only move while the keys are depressed When the ESC key keys are released the axis will stop immediately lt gt Y 4 x gt Z Axis A Axis X Y Parallel I O Display sl This function opens the Parallel I O Display window The B T T i a TS i Parallel I O Display shows the current logic states of the AXXa c M S PN TEE
18. r Home Validation Re Tool Position E 5 Inches Remoting 3 Inches Aisy 5 Inches p fo 25 Inches 2 e Inches Avis Y p p AxisZ 1 25 Inches 20 0 FastiPM 5 SlowIPM 05 DK Apply Cancel Home Position The position the axis will return to when the Home Button has executed If the Home position is blank the axis will remain in its current position for the Home function The Homing without validation axis sequence is as follows Z axis moves to the Travel position X and Y move to their Home position Z moves to its Home position Home Validation 215 KCam User Manual Validate Position checkbox enables the home validation process Direction Parameters are the positions the axis will travel towards Target Parameters are the positions the axis will be set to Fast IPM is the rate the axis will find the limit switches at Slow IPM is the feed rate the axis will recheck the limit positions Home Validation is the process of reseting the position counters by finding the limit switches When selected the axis will validate their positions using the limit switches when the Home button is pressed Typically the Direction positions should be 1 1 4 for the X Y Z axis and the Target positions are 0 0 3 for the X Y Z axis Below is an explanation of what happens during validation process using the above settings 1 The Validate Position option must be checked 2 The user press
19. sub program calls within your main gcode program to perform repetitive functions with code efficiency Macro files are called using M98 in the gcode file The format is M98 x where x is the macro file number stored in the Macro File list Example N001 MACRO EXAMPLE N002 DRAW THE SERIAL NUMBER 99633524 N003 USING MACROS 04 G90 005 GOO 21 000 006 XO YO N007 M98 9 CALL MACRO FILE 9 008 X 11 N009 M98 9 CALL MACRO FILE 9 N010 X 11 011 M98 6 CALL MACRO FILE 6 N012 X 11 N013 M98 3 CALL MACRO FILE 3 N014 X 11 N015 M98 8 CALL MACRO FILE 8 N016 X 11 017 M98 5 CALL MACRO FILE 5 N018 X 11 N019 M98 2 CALL MACRO FILE 2 N020 11 N021 M98 4 CALL MACRO FILE 4 N022 X 11 N023 G00 YO Tool List The Tool List allows editing of tool bit diameters Tool bits are accessed through the Gcode by using the T command A maximum of 200 tool sizes can be saved in each file When Importing an Excellon file tool diameters are automatically generated from the aperture list Tool Offsets are also edited here The Tool Offset function is not yet implemented Clear The Clear All button clears all the tool diameters in the list When the tool list is cleared the Plot window uses the Bit Radius in Options General Tab for displaying plot lines Using the Load or Save buttons different tool files can be stored and reloaded for various machine setups Event Sounds z Disabled Disabled
20. used to perform the specified motor controller function Port The port address of the bit used to access a user defined controller function Bit The Bit used to access the a user defined controller function Motor Enable This function defines how the motor controller axis enable bits are controlled On with Step turns the enable bits on only while a stepping process is in progress Always On turns on the enable bits with the first stepping process and leaves them on until KCam is exited Timed off delay turns the enable bits on during stepping process and turns the bits off a specified time in seconds after the last stepping process has completed LPT Info Controls ctener LPT Setup ai Parallel Port Pin Functions Pin ADDRESS STATE STEPPER CONTROLS PORT 2 INVERTED SPINDLE RELAY NORMAL XSTEP NORMAL NORMAL NORMAL NORMAL NORMAL NORMAL NORMAL NORMAL NU INVERTED XHOME SWITCH NORMAL Y HOME SWITCH NORMAL 2 SWITCH INVERTED Z ENABLE NORMAL NU NORMAL M CODE FUNCTION PORT 2 INVERTED M CODE FUNCTION GROUND E OK Apply Cancel This window gives general information on the parallel port This information can be used for determining how to connect a stepper motor controller to a PC 26 KCam User Manual Macro Files This function opens the Macro Files window The Macro Files window allows editing of the macro file names and macro file numbers Macro Files are used for
21. window and show a wider view of elements and the table The Zoom Window tool will allow exact selection of the area of interest to be displayed in the plot window To use it select the function button and draw a rectangle on the plot window over the area of interest The plot window will zoom in to the area you selected The Zoom Table tool will force the zoom level to show the whole table dimensions To use it select the function button The plot display will be adjusted to show the whole table The Zoom All tool will adjust the zoom level so the plot window shows all the elements To use it select the function The plot display will adjust its zoom level to the extents of all the elements The Pan tool allows sliding the view point on the X and Y axis To use it select the function and click on the center of the area of interest in the plot window The plot will be adjusted so that the location selected will now be in the center of the plot window The Refresh Plot tool will erase and draw all the elements back onto the plot window To use it select the function button The plot window display will be refreshed The 3D Viewpoint Tools allow the plot view to be displayed in a 3 dimensional fashion The button functions are Top View Bottom View Front View Rear View Left Side View Right Side View Isometric Right View Isometric Left View There are also 3 rotational parameters that can be adjusted by using the associated up down button
22. ASCII file contains 2D plotting data A browsing window will appear to enter the file name and location Import Excellon Imports an Excellon ASCII drill file Excellon ASCII drill files contain data for drilling holes in printed circuit boards Excellon ASCII files contain drill hole location and bit sizes A browsing window will appear to enter the file name and location Some programs do not add the Drill Size header If your files are missing the header check for options to add it in your CAD software Below is a sample file with the header and drill position coordinates M48 INCH LZ 01 00500 0 125 drill size header for tool 1 bit size 125 02 00500 0 028 drill size header for tool 2 bit size 028 TO3F00S00C0 035 drill size header for tool 3 bit size 035 04 00500 0 042 drill size header for tool 4 bit size 042 G90 01 select drill size 1 125 X 03851Y 04226 move to coordinate X Y and drill X 03851Y 01163 move to coordinate X Y and drill select drill size 2 028 X 02456Y 03415 move to coordinate X Y and drill X 02556Y 03415 move to coordinate X Y and drill T03 select drill size 3 035 X 03469Y 02238 move to coordinate X Y and drill X 03569Y 02238 move to coordinate X Y and drill T04 select drill size 4 042 X 03171Y 01538 move to coordinate X Y and drill X 03371Y 01538 move to coordinate X Y and drill TOO M30 KCam User Manual Import Gerber Imports a Gerber
23. F Export information Export HPGL file Exports a HPGL ASCII file from the data in the GCode editor A browsing window will appear to enter the file name and location Recent File List The Recent File List is located in the File pull down menu Files which have been opened before can be quickly accessed by selecting them in the Recent File List Print Prints the current window Note Currently only the Plot and Gcode windows are supported Exit Exits KCam KCam User Manual EDIT Find Finds a text string in the Gcode Editor window Replace Replaces text strings in the Gcode Editor window VIEW Plot This function opens the Plot Er 30 Viewpoint Tock Window for viewing your gcode 2886881 21891918 sns graphically The Plot window has additional buttons for changing the viewpoint of your graphical plot The Zoom Tools allow changes to the way the plot is displayed The button functions are Zoom In Zoom Out Zoom Window Zoom Table Zoom All Pan Refresh Plot The Zoom In tool will decrease the view point distance from the plot To use it select the function button and click the mouse on a desired point in the plot window The area of interest will appear larger in the plot window and show a smaller area of the table The Zoom Out tool will increase the view point distance from the plot To use it select the function button The plot elements will appear smaller in the plot
24. M02 M04 M05 06 07 08 09 M13 M30 M60 M98 Description Program Stop Optional Program Stop Program End Engage Spindle CW Engage Spindle CCW Disengage Spindle Relays Tool Change Mist Coolant On Flood Coolant On Mist and Flood Coolant Off Engage Spindle CW and Coolant Mist Program End and Reset Program Stop Call Macro subroutine User Defined M codes Mxx Mxx Engage user defined output Disengage user defined output is the number given by the user 29 KCam User Manual Supported DXF version R12 Formats Entity Description Line Single Line X1 Y1 Z1 TO X2 Y2 Z2 Poly line Multiple Line X1 Y1 Z1 to following vertexes Vertex Multiple Line to X2 Y2 Z2 Point Single Point X1 Y1 Z1 Arc CCW Arc Entity Circle Full Circle Entity Note Text items do not import TurboCAD v5 0 and v6 0 have a text property call FLEXIBLE which will convert the text entity into polylines Hardware Connections KCam has two motor control port options Parallel and Serial In Parallel Port mode KCam requires step and direction motor drivers In order to get movements from the PC to the table KCam pulses or changes the state of pins on the parallel port on your PC In Serial Port mode the MaxStepper needs to be connected to the serial port and step and direction motor drivers to MaxStepper Parallel Mode Information Each motor controller needs to have a Step input connected to a Pin on the parallel port
25. Off MOTORS ENABLED IWS KCam User Manual executed Step Gcode This displays the current step Gcode to be executed Spindle Status This displays the current Spindle state Enable TMR This displays the motor enable timer values Feed Rate box The Feed Rate box displays the feed rate the motors are moving at This value is calculated from the timing signals sent out the ports Auto Tune button The Auto tune button performs on the fly System Time Constant adjustments It should only be used when the tool is not cutting material Make sure it is not engaged while cutting materials or motor positions may be compromised After use the axis positions should be Zeroed for accuracy Motor Enable button The Motor Enable button is a software E Stop It will halt all movements immediately E Stop Switch The E Stop Switch indicator displays the r current status of the external E Stop input 8 CNC Controls Program Machine Dist to Go Zero Zero Y Emt Zero Zero A Limit Spindle Cw Spindle CCW Feed Rate box The Feed Rate box displays the feed rate the 4 Coolant Mist Coolant Flood motors are moving at This value is Tune Auxillary 1 calculated from the timing signals sent out the ports Manual Automatic 1 Process Status CONTROLS WINDOW TIMING TAB Get Time Constant button X This function determines the necessary time constant for the
26. be adjusted prior to compiling the Gcode Remove Nxx This function removes line numbers from all of the Gcode lines in the Gcode text box Add Nxx This function adds line numbers to all of the Gcode lines in the Gcode text box Compile This function Compiles all of the Gcode lines in the Gcode text box This needs to be done prior to scaling plotting or executing the Gcode Decimal Format This function formats all of the Gcode data Gcode Graphics Test Starting Step 1 Ending Step 1 W stept 0 G Code Info of Steps 23 Feed Rates Travel 30 IPM 01 MACRO EXAMPLE 02 DRAW THE SERIAL NUMBER 88527413 03 USING MACROS N D4 G30 NOOS 500 21 000 NOD6 0 NO007 M38 3 NODS 11 Cutting 30 IPM NODS M38 3 11 Remove Nxx Add Compile Decimal Format Metric Imperial the Gcode text box to conform with the decimal format parameter decimal format parameter can be modified in the Table Setup window Cnvrt Metric This function converts all of the Gcode data in the Gcode text box to Metric data by multiplying the data with the metric scale parameter The metric scale parameters can be modified in the Options window Cnvrt Imperial This function converts all of the Gcode data in the Gcode text box to Imperial data by multiplying the data with the imperial scale parameter The imperial scale parameters can be
27. d ending speed of the axis if ramping is enabled The number represents an absolute feed rate Ramp Rate This sets the ramp up and down time or velocity envelope This number represents the amount of IPM change in an Inch or mm of movement Feed Rates These are the default feed rates for moving the axis Travel Feed Rate is for high speed moves such as G00 commands The Cutting Feed Rate is for G01 commands The Jogging Feed Rate is for Jog buttons or keyboard movements Note The Cutting Feed Rate is overridden when Gcode program feed rate commands specify the feed rate Maximum Feed Rates These are the maximum Feed Rates allowed per axis These parameters are useful when certain axis are unable to operate at the same rate as the rest For example the Z axis may not operate as fast as the X and Y In this case the Z axis Maximum Feed Rate would be set lower the X and Y Invert Z Coordinates This reverses the Z axis coordinate system Hide Axis Cursor When Checked the milling cursor will not be displayed on the Plot window This function improves the step pulse train uniformity Disable Position Update When Checked the axis positions will not update until the movement is complete This 20 KCam User Manual function improves the step pulse train uniformity Enable Z Axis Jog Step When Checked the Z axis can be jogged specific distances When unchecked the Z axis can only be jogged while the jog keys are pressed This is a safet
28. de zd afro ZDirection 55s v Fase LJ ho si ZeEnable s Fara Enable ase a m ADiecion x jens fl z Fase Timed or See Aene 7 zl zi Spindle ON Nu 21 2 Fase 21 a em Pin Setup Port Bit Setup When this option is selected the bit setup parameters are enabled Pin Setup When this option is selected the pin setup parameters are enabled Pin Address The address of the LPT port used to communicate to the stepper motor controllers for Pin Setup The address is used to convert the Pin Setup to the more advanced Bit Setup Output Setup Pin The pin number on the 25 pin D Sub LPT connector used to perform the specified motor controller function Port The port address of the bit used to access the specified controller function Bit The Bit used to access the specified controller function Inverted Specifies the normal state of the output pins Input Setup Pin The pin number on the 25 pin D Sub LPT connector used to perform the specified Limit or E Stop switch function Port The port address of the bit used to access the specified controller function Bit The Bit used to access the specified controller function Inverted This function inverts normal state of the bit for the controller Auxiliary MCode Output Setup 295 gt KCam User Manual Pin The pin number on the 25 pin D Sub LPT connector
29. es the Home button in the CNC Control window 3 The Z axis moves towards position 4 Direction at the Fast IPM rate until a limit switch is found 4 Ittaps the limit switch 3 times using the Slow IPM rate and sets the current Z position to O Target 5 The X axis moves towards position 1 Direction at the Fast IPM rate until a limit switch is found 6 It taps the limit switch times using the Slow IPM rate and sets the current X position to O Target 7 The Y axis moves towards position 1 Direction at the Fast IPM rate until a limit switch is found 8 It taps the limit switch 3 times using the Slow IPM rate and sets the current Y position to O Target 9 The Z axis moves to the Home Position 10 The X and Y axis move towards the Home Position Re Tool Position The position the axis will return to when a tool change command is executed If the Re Tool position is blank the axis will remain in its current position for the tool change The Re Tool axis sequence is as follows Z axis moves to the Travel position X and Y move to their Re Tool position Z moves to its Re Tool position Table Setup Parameters xi Axis Setup Homing Tooling Jogging Keyboard Jog Keys 3 05 Feed 88 90 27 po re ros SiG Restore Defaults Apply Cancel Jog Key Assignment The Manual Jog Keys can be reassigned for custom keyboard To assign a new key select an
30. ial connection to MaxStepper Comms Total number of communication attempts by KCam to MaxStepper Errors Number of erroneous communication attempts by KCam to MaxStepper CS Er Number of Check Sum type communication errors Len Er Number of bad length type communication errors Buffer Number of motion command strings waiting in the command buffer Rev Firmware revision in MaxStepper Date Date of firmware in Maxstepper Hz Current pulse rate in Hertz that Maxstepper is applying to the stepper motors CByte1 Displays the control byte for Axis X Y Z and A CByte2 Displays the control byte for future axis Status Message Information on Maxstepper Communication status LPT Setup 24 KCam User Manual x Port Io Controls 12510 LPr infocenerad Pin Setup Port r Input Setup Inverted Pin Port Bit X Limit Switch Min 10 z amp H379 fje v BitSetup PinSetup PinAddress BH378 Output Setup Pn Pot Bit Inveted Y Limit SwtchMin 1 8H379 91 gt fi xa Z Limit Switch Min 12 95 z Fase X Direction 2 29 lt sre A Limit Switch Min gt gt Fase Keef mecs False fa Fake Y Direction ssi 5H378 False Pin Port Bit Inverted ene s Iles a
31. lly sent to you in about 1 to 5 business days Registration response times may vary due to business activity and holidays Note If PayPal does not support your country you can try a nearby country or mail payment to Kellyware Details on sending payment are available at http www kellyware com kcam kcam registration htm Shareware KCam is shareware until a valid registration code is entered Until KCam is registered a user has a 60 day or 60 execution trial period until the software becomes limited During the trial period KCam has no limitations After the trial period has finished some functions are disabled or limited After Trial Limitations include Gcode saving is disabled Gcode lines are limited to 500 Gerber Isolation lines are limited to 100 421
32. n i M e 15 VIEW ses sick cose de Eel HUS E te rot 15 Load Default Form 15 MACHINE SETEUPS o oto tni 15 Create New Machine Se DUD qst d UL Co 15 Load Machine Setup eee or Ne ede DR 15 Machine Setup de timation aieo aves et acer quie KH ne De ARE Sau UR POR RETE RENE EDEAR UA 15 SOE UU EAE en wo easiest E ge E E dar Mti E ean 15 EE E E 15 System TIMIN i tes sale a E SS 19 Table IMMO 19 POLES DD roto teda uns cis da tdi d uM E E ki c M RUE 23 Macro Files NE STE 27 Tool SU eot EE esentium I d i d 27 Event Sounds ree tet tete tee tbs deta oig sian ecce to te eset vite iens 27 FUNCTIONS o EA A E LES QE 28 Scale Gecodexc eot emet 28 Offset Gcodes ise ies dtes ev tie Se 28 Convert Geode to Absolute Gn o e a v Ra er ysis e TERR TREE 28 Convert Gcode to 2 0 000000000000000000000000050000 28 KCam User Manual WINDOW Pass tiene 28 Window List E 28 Sonan ee edt eame eat ee eee ENES 28 Help HNC OERE EE EE tas E
33. nd HPGL importing Select Backlash to True if the Backlash distances are known optional Select Ramping to True if you wish Ramp Up Down function to occur Enter a Ramp Start IPM 5 recommended Select a Ramp Rate 50 recommended Enter the Maximum Feed Rates for each axis Select the OK button Step 3 Port Setup window Select the Port I O Controls Tab Select Port Type LPT or Serial Port depending on your controller type Select Parallel Port I O DLL InpOut32 or DLPort depending on your Operating System Select the Apply button Select the LPT Setup Tab Select the Pin Setup option Select the Pin Address typically amp H378 for LPT 1 Enter the Output Pins associated with your motor controller step functions Invert each Pin as necessary to acquire the desired normal state when not moving an axis Enter the Input Pins associated with your limit switches Invert each Pin as necessary to acquire the desired normal state when Limit E Stop switches are not engaged Select the OK button Step 4 System Timing window Select the Start Button Wait until the timing is complete and select OK Press the Esc key on the keyboard if the process takes longer than 2 minutes Open the CNC Controls window and select the Manual tab You can test the motors by using the Jog Arrow buttons KCam User Manual gt KCam 4 C Projects General CNC Data Files Gcode Files NumOne GC P u d OW n Me n u S File Edit View Machine Setup Functions Window
34. ns will execute dwell commands This function should be left unchecked except when verifying dwell times for plasma cutting or similar applications Plot Table Grid When checked the Plot window will show the CNC table in the form of a grid When unchecked the Plot window will only show the GCode plot lines The Z axis display is also effected by this setting Display Line Nodes When checked the Plot window data will show small circles at the end of each line This is designed for diagnostic purposes where adjoining lines must be detected Normally this should remain unchecked for plot speed purposes Def X Offset The default axis offset value used when the Offset Gcode function is performed Def Y Offset The default axis offset value used when the Offset Gcode function is performed Def Z Offset The default axis offset value used when the Offset Gcode function is performed Def X Scale The default axis scale value used when the Scale Gcode function is performed Def Y Scale The default axis scale value used when the Scale Gcode function is performed Clear Error Log File on Startup Clears the contents of the Error Log File every time KCam is started The Error Log file contains information about any errors that may have occurred in KCam s functions Error File button This button opens the error log file in NotePad exe for viewing Options Gcode tab 16 Scode DXF
35. o reduce poly lines to single lines when the slopes match Sort Entities When selected the Gerber Import function will sort the isolated polygons by location This 18 KCam User Manual option reduces cutting time Tool Radius This option adds a tool radius to the Gerber polygon diameters It can enlarge the plot entities to increase pad and line thickness changing this value can also reduce the isolation imperfections on some Gerber files Minimum Line Size Line sizes the same or smaller than this parameter are processed using the following functions Discard Minimum Lines option This option forces the isolation process to ignore objects this diameter and smaller It decreases import time by ignoring small entities such as text Draw as Lines option This option forces the isolation process convert objects this diameter and smaller to single line entities not outlined entities Note Gerber RS274X format is the only gerber format supported If your files do not import properly check to ensure they have a valid aperture header 3 System Timing System Timing Press Start to begin timing sequence This function opens the System Timing window The System Timing ep window determines calibration data specific to the PC in use This Desited Feed Rate 2200 Actual Feed Rate calibration data adjusts the axis velocities for accurate motion Feed Rate Error Time Constant
36. parallel port pins This function may be helpful when nave gt i P rout tich sats diagnosing I O problems BH state Bl Output high state m Output low state Save Form View This function saves the current Plot Gcode and CNC Controls window size and positions When is started again the forms will be loaded at the save size and position Load Default Form Positions This function loads the default form size and positions This may be useful if a form is positioned out of reach after a screen resolution change MACHINE SETUPS Create New Machine Setup This function saves the machine setup to a storage file for later use Load Machine Setup This function loads a saved machine setup file Machine Setup definition Machine setup files are the parameter files for different machines An unlimited number of Machine setups can be stored and reloaded All parameter information like Table Setup Port Setup Options and Tool Lists are stored in the machine setup ASCII file An example use would be to store parameters for two different CNC machines Another use would be to store different parameters for different uses on the same machine like drilling and routing PCB s Setup Options E Options E3 General Gcode DXF Exceton HPGL Gerber Options General tab Pking Options Defaut Offsets Arc Resolution 64 x 10 Force Plot Bit Radius v 10 Arc Resolution
37. rd jogging controls Manual gcode input Estimated CNC processing calculation Tool position status indicators Dual cutting depths for sign engraving Multiple motor enabling options PCB Isolation Plots from Gerber RS274X KCam User Manual Quick Start with KCam There are 4 steps to setting up your CNC table for use with KCam Step 1 allocates a file for KCam to store your custom parameters Step 2 includes entering in your machine axis parameters in the Table Setup window Step 3 includes entering your communication port information in the Port Setup window Step 4 is determining the timing parameters using the System Timing window Step 1 Create a New Machine Setup Select the Machine drop down menu Select Create New Machine Setup Select a folder on your hard drive to store your machine setups Enter a name for your CNC machine setup in the File Name box Select the Save button Step 2 Table Setup window Select the Units of Measurement you use Metric or Imperial Select the Numerical Format ex 000 0000 Enter the Steps per in for each Axis ex 4000 IPM Enter the Lengths for each Axis ex 10 Inches Enter the Backlash distance ex 0125 Inches for each axis optional Enter the Feed Rates Traveling Cutting and Jogging Enter a Travel Depth for the Z Axis ex 0 50 for 2D DXF and HPGL importing Enter a Normal Cut Depth for the Z Axis ex 0 125 for 2D DXF and HPGL importing Enter a Deep Cut Depth for the Z Axis ex 0 00 for 2D DXF a
38. s These will change to 3D view axis KCam User Manual GCode Highlighting Another feature of the Plot window is the GCode Highlight function If no zoom functions are selected and the plot viewpoint is in Top View mode a line may be drawn using the mouse that intersects one plot line or arc This will line will tell KCam which element you are interested in and KCam will highlight the GCode in the Gcode window that corresponds with the intersected element Conversely you can double click on GCode in the GCode window to highlight the corresponding plot element Gcode This function opens the Gcode Editor window The Gcode Editor window allows viewing and editing of the gcode data The text window operates similar to a normal windows text editor Functions like Cut Paste Find and Replace work in the text box As described in the Plot section double clicking on Gcode in the Gcode Editor window will enable the highlighting function in the Plot window The line or arc element corresponding the selected code will be shown in a different color black Find Function This function will open a text search box to allow searching through the Gcode for similar text Reset to Beginning of Gcode This function resets the Graphic Test Pointer to the beginning of the Gcode Advance to Next Gcode This function advances the Graphic Test pointer to the next Gcode line and plots the associated Gcode Feed Rates These entry boxes allow feed rates to
39. sion Registration button and System Information button Registration CNC Data Files Gcode Files NumO anctions Window Help 1Plot 2 Gcode 3CNC Controls About KCAM4 KCAM4 Version 4 0 18 CNC Drilling and Routing Application Update Software at www kellyware com Support Bugs www kellyware com kcam support Registered to Demo Shareware Days Left 0 Shareware Executions Left 0 Copyright 2006 Kellyware Register Error Log System Info Registration information can be entered to allow full use of the software and remove time limits In order to register your version of KCam you must obtain a Key Code from Kellyware 28 KCam User Manual Supported G Codes G Code G00 G01 G02 G03 G04 G17 G18 G19 G40 G41 G42 G45 G73 G80 G81 G82 G83 G90 G91 Pxxx Fxxx Description Rapid Traverse Normal Traverse CW Arc CCW Arc Execute Dwell Time XY Plane Selection XZ Plane Selection YZ Plane Selection Cancel Cutter Diameter Compensation Start Cutter Diameter Compensation Left Start Cutter Diameter Compensation Right Normal Traverse Drill Cycle End Drill Cycle Drill Cycle Drill Cycle with Dwell Drill Cycle Sets Absolute Mode Sets Incremental Mode Sets Dwell Time to xxx example P2 125 will set dwell to 2 125 seconds Sets Feed Rate to xxx example F45 will set the feed rate to 45 IPM Supported M Codes M Code Moo M01
40. terials or motor positions may be compromised After use the axis positions should be Zeroed for accuracy Motor Enable button The Motor Enable button is a software E Stop It will halt all movements immediatly E Stop Switch The E Stop Switch indicator displays the current status of the external E Stop input CONTROLS WINDOW AUTO TAB Starting Step This is the first Gcode line that will be executed when the automatic process is started Ending Step This is the last Gcode line that will be executed when the automatic process is running CNC Start Process This buttons starts the automatic CNC process CNC Pause Process This buttons pauses the automatic CNC process CNC Step Process This buttons steps the automatic CNC process after a pause CNC Stop Process This buttons stops and resets the automatic CNC process CNC Process Status Box This indicates the current CNC process AUTO RETOOL This buttons pauses the automatic CNC process and moves the axis to the ReTool position Step Status This displays the current step number to be 8 CNC Controls 12 Program Machine Dist to Go X Zero Zero Zero Zero A Limit Spindle CW Spindle CCW Coolant Mist Coolant Flood Tune Auxillary 1 Starting Step 1 Ending Step 25 P L AUTO RETOOL Y A Feed Overide EE 4 Step 1 of 25 001 NUMBER ONE Spindle
41. ting system is used then DIPort dll must be used MaxStepper Setup KCam User Manual x Port WO Controls MaxStepper E Setup intotGeneral Status Max Inputs and Outputs Auxillary MCode Output ad x Invert X S IV XLimits Invert A m Invert X Step v X Limits Invert Step ALimits inven Direction Fg Invert Direction Ws Lu m NUE Enable v Invert Enable iN 2 NU v Present Invert Limit v Invert A Limit 5078 m Inu gt Comms 1362 Invert Y Step Y Limits VV B Limits Ere 0 Inven Y Diecton V 17 2 i ed LS EF d Invert Enable 7 156 7 we Buffer 0 Invert Y Limit 2 Inv it Vv zl Dale 12 11 2008 Inverzs Z Limits McL BaD ate Invert 2 Step v mits rve v imits Hz 0 Im Ia 10077 NU v CBytel D nvert Z Direction ael CBite2 0 InvertZ Enable Inv K E STOP Spindle E Transmit InvertZ Limit v Invert Limit r Ramp Rate 3 PWM utput 4 Rate v He step Marinum Spindle 100 RPM Port Status MaxStepper Com Port Determines which serial port KCam uses to communicate with MaxStepper The serial port choices are 1 2 3 or 4 Communication Displays the status of the ser
42. work with this to assign the proper numerical format for the imported data Check the output options in your CAD application to determine the proper settings for these parameters Options HPGL tab Def Pen Size This is the default pen size when importing a HPGL file Sort Entities When Checked Entities are sorted by position prior to generating the Gcode data during a HPGL file import process Using this feature with large files will severely increase the import time but the Gcode will be more efficient Options Gerber tab Cleanup Gerber Data When selected the Gerber Import will remove redundant and overlapping objects Trace Isolation When selected the Gerber Import will convert Gerber RS274X photo plot lines to grouped polygons for PCB trace milling Cleanup Lines fs Options General Gcode DXF Excelon HPGL Gerber HPGL Import Options Def Pen Size 003 x Sort Entities i Cancel Options General DXF Excelon HPGL Gerber Gerber Import Options Cleanup Gerber Data ToolRadius 0 0001 f Minimum Trace Isolation Line Size 10 009 Cleanup Lines Discard minimum lines Sort Entities C Draw as Lines 2 Double Cut 6002 OK Apply Cancel This option will remove some unwanted lines the polygon isolating program leaves behind It can als
43. y feature to avoid jogging the Z axis into the table when using Jog Distances Hide A Axis Position When Checked the A axis will not be shown in the CNC Controls window This feature allows the use of lower screen resolutions 800 by 600 when the A Axis is not needed Otherwise a screen resolution of 1024 x 768 or greater is recommended DRO Format This parameter changes the CNC Controls window DRO digital read out format This feature allows the user to customize how numerals are displayed on the DRO for axis positions Limit Switches Disabled When Checked the Limit Switches are not polled during operation and will not stop the Axis It will speed up the maximum step rate This function is useful when you do not have limit switches available or want faster step rates When it is set or reset changed the System Timing function should be performed Application Priority These options determine how KCam operates within the Microsoft Windows environment When normal priority is selected KCam operates like any standard window When high priority is selected KCam will operate with more priority than other programs and step pulse streaming may improve When Realtime priority is selected KCam will have much more priority than other applications or processes within Windows Be aware that Realtime mode can make KCam seem unresponsive while axis are in motion Table Setup Parameters xi Axis Setup Jogging r Position 7
44. yboard E Program Machine Dist to Go X Zero XUmi Zero Zero Zero A Limit Y Feed Overide Spindle CW Spindle CCW Coolant Mist Coolant Flood Tune Ausillary 1 Manual Automatic Timing Process Status NY ALT 4 gt Y e Single Step 8 G01 0 25 Y0 25 20 25 Goto Move to Move to ReTool Home NJ MOTORS ENABLED 4 Jog window is open the arrow keys allow jog movements while those keys are depressed See the Keyboard Jog window for more details Goto button When the Goto button is pressed the Gcode data in the Goto Data Entry box will be immediately processed Goto Data Entry box The Goto Data Entry box is used for entering Gcode commands to be performed when the Goto button is pressed Only single line commands are allowed to be entered 11 KCam User Manual Feed box The Feed Rate box displays the feed rate the motors are moving at This value is calculated from the timing signals sent out the ports Override box The Throttle Override box adjusts the feed rate the motors are moving at in real time This can be used to slow down cutting feed rates during an operation Auto Tune button The Auto tune button performs on the fly System Time Constant adjustments for parallel port users It should only be used when the tool is not cutting material Make sure it is not engaged while cutting ma
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