Captured Nut Fidget Toy - Customizable

I love little spinning fidgets, and I couldn't find one that had the zip and spin that I really wanted, so I made this little print-in-place nut-and-bolt twirly fidget.

The gaps are all 0.4mm and the overhangs are 45 degrees, so make sure whatever printer/material/settings you are using can handle that, or you'll end up with an art piece about seized bolts instead.

**Update:** Added an extra long bolt with slower drop/faster spin. (You will probably need a brim or something when printing the long one.) Added openscad source.