Algodoo

Nice effect, but technically not correct because we should see 6 nut facets go by for 1 pitch of travel.

You're correct, but I wasn't shooting for accuracy. I was only concerned about aesthetics and a cool animation.

EDIT: Okay, I adjusted the travel so that it's more accurate. I also speeded up the travel so that it doesn't move too slowly. Thanks for your comment.

Wait... Let me put on my sunglasses. Yes, it looks real good. Nice coding. I have more suggestions (nit picking):

1. I can see (by remotely operating your webcam) that you have a mouse infestation problem. I suggest using mouse traps and baiting them with either cheese or peanut butter.

2. I've also noticed that you have put on a few pounds. If you use triangular weights on your weight lifting bar then the setup will not roll away when you put it on the floor. May I also suggest a buttress thread to help prevent the weights from slipping off.

s_noonan -

1. I didn't even realize that that was an issue. Thanks for finding it!

2. I might go through that exercise with the triangles if I were using the scene to teach an Engineering class about threaded fasteners. But I really only wanted to create a scene that looks cool, and not necessarily for it to be accurate or precise. I also didn't want to spend a huge amount of time on it.

Thanks again for your suggestions. You are usually correct, and they are always welcome.

There is a missing texture on the nut for me at one of the frames.