After working with SW for a while, the "zero geometry" error pops up often enough to be a pest. Someone else who uses SW tells me it's because SW doesn't know what you want it to do when that happens, leave material or take it out. This person told me the only way around that as far as he knows is to move one of the dimension about .001 (a very small amount) to avoid that particular error. That's what I've been doing and it does meet my needs but is that the only way around this error? Norm