Thanks for the pointer. So I guess with add-ons you may be able to reverse engineer a mesh into a set of curvy trimmed NURBS surfaces. But there is no way of making an one-to-one conversion from a mesh into a solid. I mean, if I have a mesh sphere with 100 triangular faces, there is no way to convert it into a solid with 100 trimmed planar surfaces, right? Deelip Menezes