CompuServe Messages

As kevin said, use the 3D Editor's Surface\Normals\Flip commands or use the Optimize Plug-In's interactive method. You're est et is to actually model correctly for mesh output in AutoCAD – one golden rule prevails: Every face of the same mesh needs to share 2 vertices with ever adjacent face. If they don't, the normals are erratic. If they do, they'll have correctly unified normals every time (although the entire mesh may sometimes need to be flipped). Check out Chapter 11 of Inside 3D Studio – lots of detail on this there. – Phil