Hi Lee, one other note on this fillet - I have made some tune-ups to the next v2 beta for filleting so that when the filleter runs across a problem with a corner or with handling the end of a fillet it does not fail the entire fillet operation like it will in the current release.

In this case it means that the edge based fillet will produce a result in the next v2 release, I've attached the .3dm file for it.

You can see that the main problem seems to be with trimming the fillet in that back area:



That area has some excess fillet bits that would need to be trimmed out or cleaned up.

But I think this should help quite a bit to get some useful results out of the edge-based filleting in spots where it would just not cooperate at all before.

- Michael