Hi Rich_Art,

> I really hope Michael can improve the filleting or build in
> filleting as seen in Autodesk 123D.

It's not really so much up to me - I didn't write the fillet code for MoI, it comes from the Solids++ geometry kernel.

Filleting is not really a very strong area of the kernel, although they have made some incremental improvements.

Filleting tends to be an area that requires a lot of special case handling for different kinds of situations so it is a difficult area to develop well. It's not like you get better filleting by just improving one section of code, it's more like you add more and more kinds of specific handling for various different arrangements for how edges come together.

- Michael