I am trying to mill this angled surface. Conveniently it is 45 degrees relative to the XY plane, so a 90 degree chamfer mill could handle this from the top in my Tormach. However, it would be nice to remove most of the material with a square end mill first.

I've tried everything I can think of, including roughing waterline, drive, roughing plane, etc. and setting various job zones, restriction zones. The closest I have come is using the roughing plane operation with .001" scallop at 90 degrees (so it runs up and down in the same direction as the ridges), setting the bottom level to the angled surface itself, and setting a job zone in blue so that it doesn't try to mill the whole piece. It has some weird behavior although the final result is not bad.

Yet, I still can't figure out how to use the chamfer mill to finish it off.

How would you approach this?