Hi Steve,

> I've tried ShrinkTrimmedSrf and it does not seem to
> have any effect, should I see all the points from the
> trimmed off sections go?

Points that are totally to the exterior of the outermost trimming boundary will go away, stuff like this - with this trimmed surface here, you can see the "underlying surface" is larger than the current active area of the surface:



If you have a situation like that you can run ShrinkTrimmedSrf on it which discard areas of the surface that are larger than the bounding box around the outermost trimming boundary, giving this result:




An underlying NURBS surface is always made up of a rectangular grid of points though, so it's not possible to discard just some control points from the middle of the surface, so it won't shrink away stuff from interior holes and it won't have any effect if you have an outermost trim boundary that touches the edges of the underlying surface already.

- Michael