Hi friend,

re:
> I think the construction line is preventing the fillet from being larger.

Yes, that's correct that is a limitation in the fillet engine in the geometry library used by MoI.


> What I want to know is: can other programs solve this fillet or is
> this a universal NURBS fillet problem?

It's a pretty common limitation in fillet code that hasn't had say something like a minimum of 50 man years invested in developing it.

The sort of "top shelf" ones like ACIS and Parasolid can handle that one though. But they can also be more finicky about wanting quite precise geometry as well though.

- Michael