Hey thanks Rich--- I'm looking forward to seeing how this one "behaves", and I'll probably use it more too. I have since had the "extra, unexplained polygon" thing happen many more times, to the point of being fairly predictable. Rod and Tube does a teriffic "capped extrude" function, something I've never seen in any of the free programs I know of. You are well on your way towards bigger and better things, you know, and you're really starting to make me want to look into Hyper Studio some more. :) I'm gonna download this thing and play with it right now, and I hope I can have something to show with it soon. Cheers, and THANKS! Mike