Originally Posted by
RamseyRuss
I tried the merge you suggested, and just looking at the file you sent - I'm afraid I don't see what the difference is.
It bothers me that, even with the 0.0001 tolerance that you mentioned, when I post the toolpath I get three G3 moves (X,Y,I, and J) at every Z depth rather than one simple G3 circle (I and J) at each depth. Plus, if I pick just the upper two inside surfaces (the only part I'm really trying to mill) and a ball nose end mill, the toolpath stops with the ball tip at the bottom edge of the second surface, rather than extending below it as is required to mill the full surface (doesn't matter whether I use Tool Tip or Tool Center in the parameters). Guess I will try again on the BobCAD forum, as you suggested, and see if anybody else picks this up.