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CNC Plasma cutter torch moving before ARC established

Discussion in 'Laser Cutters' started by Adam3109, Nov 29, 2023.

  1. Adam3109

    Adam3109 New
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    How do I determine the correct amount of time to wait for ARC to form before moving the torch? On my first run the torch fired after the sequence was completed.

    GCODE has following:

    G0 X5.5709 Y2.7755
    M3 S1000
    G4 P0.6
    G1 X5.4048 Y2.6699 F87

    Do I increase P0.6? How do I determine how long it should be? Trial and error? Do I need S1000 after M3?
     
  2. David the swarfer

    David the swarfer OpenBuilds Team
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    How are you generating the Gcode? if you are writing it by hand, don't, CAM does a much better job as it is already debugged (-:
    most CAM software has a setting for pierce delay, that is what you change.
    Are you saying the 0.6 of second is too short? It probably has to change to suite the thickness of the material you are cutting.
    Yes you need the S1000 to turn the torch on, and a corresponding M5 to turn it off.
     
  3. Adam3109

    Adam3109 New
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    Hi David
    Thanks for response. I am using Fusion 360 to generate the code. 0.6 seems too short as the torch moved through a sequence before firing missing the first part of the cut. It arc actually started after the second M3 command in the code which also a P0.6 delay.
     
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  4. Alex Chambers

    Alex Chambers Master
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  5. Adam3109

    Adam3109 New
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    Hi Alex - thanks for response - I have post process correctly set per instructions via link you sent - I can see I am able to adjust the setting for the spindle delay.
     
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  6. David the swarfer

    David the swarfer OpenBuilds Team
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