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#426 G64 path tolerance bug

2.7
closed-invalid
nobody
new TP (1)
1
2015-07-06
2015-07-04
No

Path following with the new TP seems odd for this test code. The outer star works as I would expect, but the inner star which has rounded tips seems to get blended in an incorrect way. Code and pictures attached. Each picture has the G64 setting in the picture name. The path following exhibited different behaviour with plain G64 than one with a tolerance; it does not look like just a different tolerance. When a tolerance is specified, the deviations from the straight lines do not appear to change with changes in P tolerance.

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Discussion

  • Chris Radek

    Chris Radek - 2015-07-04

    I misunderstood what was going on when I recommended making this bug report. I think this is just how the NCD works in this situation. It is removing the arc from the path because it's smaller than the tolerance. This is by design. Perhaps for this kind of gcode you should try G64 P0 Q[tolerance].

     
  • Moses McKnight

    Moses McKnight - 2015-07-06

    Ok, I was helped to understand this better and it is not a bug. P does set the motion tolerance and Q sets Naive Cam Detector tolerance, but if Q is not specified it defaults to the same setting you give P. I fixed my problem by specifying Q0 or even Q0.001

     
  • Moses McKnight

    Moses McKnight - 2015-07-06
    • status: open --> closed-invalid