I have built a number of models with parallel surfaces that allow Upper and Lower curves to be successfully turned into features. Upper and lower guide values show up nicely in the wire simulations and the final sim geometry of the cut model looks perfect.

However, when I take the Gcode to our Mits FAS-2, the displayed Check geometry on the controller screen is badly distorted. I have experimented with a good number of Mitsubishi EDM post processors, 12 actually, and none faithfully reproduce the 4axis tapers in the sim. The largest taper is 7 degrees. Actual cuts are as distorted as the Check screen.

I sure would like to hear from anyone using FeatureCAM in production making 4axis XYUV taper wire cuts on Mitsubishi EDMs.

Suggestions???

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