No ChamferEdge for other than 45° in V8… Probably not in V9 either. Just not seen as a priority.
Or maybe I’m wrong about that - there does seem to be some activity on tis in YouTrack in the last 24 hours…
I think the main problem with the current ChamferEdge code is basically it’s a flat FilletEdge - which is by design equal-setback. So I guess they would have to figure out how to make the VariableChamferSrf code do all the automatic trimming, joining etc.
Thanks. It looks like this fails in Rhino 8 as well → RH-80860 ChamferSrf: Failure sample
Both in Rhino 8 and Rhino 5, you can convert the extrusion object to a polysurface and the ChamferSrf will work as expected with the values that you used.
-wim