Hi Danny,

> I guess it's for sheet to sheet fillet situation, is that right ?

I'm not sure which kind of fillet is the sheet to sheet kind, but previously if there was any problem with handling the ends of the fillet surface the whole fillet would fail.

I think one of the most common ones was trying to intersect the fillet with a kind of "side wall" surface but not getting a clean intersection, possibly due to shallow intersecting angles or something like that.

- Michael