Hi Michael,
you are right, thats what i try to do. I just need a rough Nurbs model for a
cost estimate purposes. An these guys there can only deal with closed surfaces.
However, i will have to do a reconstruction of my model anyway, so they will have
to wait for the finished model.
With the non snapping objects: I got the solution here. The snapping was set to
elements which are not present in the isolated geometry. So it could not snap at all.
Best regards,
Heiner