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Thread: Incorrect arc moves

  1. #1
    Registered MadPickinSkills's Avatar
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    Incorrect arc moves

    Hey guys,
    I loaded a G-code program into the KM-3 today for a test run. Basically just a square. There seems to be an issue with arcs. One of the corners appeared to cut correctly, one looks like a chamfer and the other 2 made counterclockwise (G3) arcs instead of clockwise (G2) arcs. The linear moves looked fine. When we were cleaning the boards in the cabinet, it's possible that some of the dip switches on the boards were accidently fliped. Could that be the problem? I dont know for sure that it happened, but the guy who cleaned them said he may have flipped one of the switches. Has anyone heard of that?
    Here is a part of the G-code:%
    N100G70
    N110G0G17G40G90
    N120G0X0.Y0.
    N130T1M6
    N140G0X-.4243Y.4672S1500M3
    Z.25
    N160Z.1
    N170G1Z-.0714F7.
    N180X-.3536Y.3964
    N190G3X0.Y.25I.3536J.3536
    N200G1X2.
    N210G2X2.25Y0.I0.J-.25
    N220G1Y-2.
    N230G2X2.Y-2.25I-.25J0.
    N240G1X0.
    N250G2X-.25Y-2.I0.J.25
    N260G1Y0.
    N270G2X0.Y.25I.25J0.
    N280G3X.0868Y.2576I0.J.5
    N290G1X.1853Y.275
    N300Z.0286F10.
    N310G0Z.25
    ......


  2. #2
    Registered MadPickinSkills's Avatar
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    I think I figured it out. I was looking though some of my old posts and saw that gthlm mentioned the arc's are absolute centers I had Mastercam set Delta start to center (incremental). I'll try it again absolute.


  3. #3
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    Quote Originally Posted by MadPickinSkills View Post
    I think I figured it out. I was looking though some of my old posts and saw that gthlm mentioned the arc's are absolute centers I had Mastercam set Delta start to center (incremental). I'll try it again absolute.
    Bingo


  4. #4
    Registered MadPickinSkills's Avatar
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    Haha, yep, that was the problem.


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    It was skullworks that said that. Credit where credits due!


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