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Jobnt
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In my experience this means one axis that should be orthogonal is out of square by some minuscule value.

This is most likely caused by using solid surfaces or geometry that's not as square are you think it is to create

a tool plane.

This is a report on a tool plane for B45 on a plain Jane Mastercam HBM post

Work Offset           : 0
Origin (world)        : X0. Y0. Z0.
Origin (view)         : X0. Y0. Z0.
Matrix                : X0.70710678 Y0.70710678 Z0.  
                      : X0. Y0. Z1.
                      : X0.70710678 Y-0.70710678 Z0.

 

If that Z0 was Z.0001, the post would define this as a 5X rotation and choke because it's a 4 X post

The solution is to rebuild the plane  so that it is properly defined.

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13 minutes ago, gcode said:

The solution is to rebuild the plane  so that it is properly defined.

I haven't experienced the problem in quite some time now, so I'll guess it's fixed.

Working with CNC and Karlo they discovered a skew that was happening deep in the math....we found that once you created a plane and it was off, there was no fixing it...you literally had to start fresh and start importing all of your toolpaths.. 

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20 minutes ago, gcode said:

This is most likely caused by using solid surfaces or geometry that's not as square are you think it is to create

 

This was it. The plane was off by a few seconds. Couldn't see it unless I zoomed in and scrolled the window along an edge.

 

Thanks g. You da man!

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