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Wrong Pocket Size Results

Discussion in 'Other Software' started by blue25, Jul 21, 2018.

  1. blue25

    blue25 Well-Known
    Builder

    Joined:
    Dec 8, 2016
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    Hi,

    Recently I have build my first CNC based on Sphinx.
    For the controller I use Gecko G540. CAD software use Aspire, and MACH3 to run the G-Code

    I have strange result for my pocket operation.
    When I make pocket toolpath frrom aspire, for example i make 20mm pocket, the result is 19mm. When I try to make 10mm pocket, the result is 9mm. Any size I want to make, the result is 1mm smaller in X and Y.

    But when I make profile toolpath, the result is right. 20mm profile, will cut 20mm. Also for other size.

    Need a lot of advice here.

    Regards,
     
  2. JustinTime

    JustinTime Master
    Builder

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    I'm not familiar with Aspire but I can tell you that the problem is with Aspire. It is possible that you have a setting that makes it smaller, like maybe it's only the rough cut and it expect a final, finish cut, which is many times 0.5mm (which is 1mm in total).
     
    sharmstr likes this.
  3. blue25

    blue25 Well-Known
    Builder

    Joined:
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    hi, for cutting (profile toolpath), it has no problem. the size is right. but when doing pocket toolpath, it have the problem. and aspire doesn't use rough cut & finish cut except for 3d object. for 2d pocket toolpath, it doesn't use rough cut & finish cut

    here is the gcode from the aspire

    T1M6
    G17
    G0Z20.000
    G0X0.000Y0.000S7730M3
    G0X9.148Y9.057Z5.000
    G1Z-2.000F600.0
    G1X12.638F1200.0
    Y12.547
    X9.148
    Y9.057
    G1X6.608Y6.517
    G1X15.178
    Y15.087
    X6.608
    Y6.517
    G1X4.068Y3.977
    G1X17.718
    Y17.627
    X4.068
    Y3.977
    G0Z5.000
    G0Z20.000
    G0X0.000Y0.000
    M30
     

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