Thanks for the replies.
I just tried that, and got some success, but not all. I tried a square plate with a cylinder removed from the top (not all the way through). I was able to extract the edge and create a contour for the circular center piece, then generate the toolpath for it. But I cannot extract the edge for the outer square (so that I can profile it).
BTW, I only have "Extract single" and "Extract solid", but I do not have "Extract surface". |