I have a surface created from two 3D splines which share their end points (see attached sample). I can't figure out for the life of me why the surface is open at the point where the two splines meet.
Any help is greatly appreciated -- this has been driving me nuts!
Thanks
You are misunderstanding what is meant by open surface. If you sketch a circle and make a planar surface, you will get the same open surface message. An open surface is any surface that doesn't enclose a volume. It doesn't mean that there is a problem with your surface.
Jim S.