I'm relatively new to Rhino so excuse me if I get some terminology wrong.... A friend of mine showed me some models created using Curves and/or Nurbs. As he created them I could see the surface looked nice and smooth but the wall thickness was almost nothing. My question is would a model created like this run into problems when it came time to printing it (it would upload okay, though?) because of the thinness of the wall? Secondly, how does one get around that? By turning the model into a mesh object? Is there a way of "thickening" the wall of a model created with Curves, Nurbs and whatever else in Rhino?