Hi Mark, I do want to improve filleting in MoI but the main route to doing so is to incorporate an additional geometry library and there is a large amount of work involved in doing that. So I'm not certain when that will happen.

Filleting is a very complex operation involving many aspects such as offsetting surfaces, extending surfaces, intersecting surfaces that may be nearly grazing each other and recognizing many different corner junction conditions and filling those in. It is one of the most complex operations in CAD and is not easily dealt with.

- Michael