Originally posted by Zombra Hi I am doing a model for one of my courses and I was trying to Attach two surfaces and I couldn't. The reason is, one of the surfaces is a lofted one from 2 curves and the other one is a planar (trimmed surface) how can i attach them? trimmed surfaces cannot be attached. Originally posted by Zombra ALso, I have a little problem when it comes to rendering the image. In the Render Globals, I've set everything as Production Quality, using raytracing, etc, etc. But the final image is not accurate. Curved surfaces don't look smooth as I would like them to be. The look like polygonal surfaces. increase the tesselation.