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It's because you have "Multiple Depths" set as well as a ramping strategy specified. The problem comes in when the Max stepdown of the "Multiple Depths" is equal to or less than the maximum ramping stepdown. Tweaking it around, I found that setting the multiple depth to .150 and the ramp stepdown to .125 cured it. FWIW, you could have .126 and .125 respectively, and it would work.

I am curious though, why you are specifying Multiple Depth if your strategy is to slowly ramp down the contour of the part....To each his own I suppose


Seth Madore
Owner, Liberty Machine, Inc.
Good. Fast. Cheap. Pick two.