The beauty of the moulding toolpath is that it varies the stepover the more vertical the slope providing smoother walls.
I mentioned that I find the moulding toolpath (MT) exasperating and I guess this was one of those times---despite the brave face of my previous post:
- despite the profile being 1.5" long the MT wouldn't initially calculate as there were "overlaps" so I needed to make the profile 1.495" just to avoid that. Really the MT should have been able to rotate the profile 360 deg about the circle perfectly.
- when using the full circle as a rail the MT would only give a toolpath "outside" the circle. I tried all combinations of reverse direction and mirroring the profile
- MTs need to be created one at a time. You can't apply one to both circles.
So I just split each circle in half and created a separate MT for each arc. Tiresome, but it is what it is. Even with the split if you look to the centre of the circle you will see the profile not really being rotated about a common central point.