This was me trying to make a somewhat decent hinge for later use in a Yoshimoto Cube (at least - I think that's the name :) ). This is just two cubes, but it's pretty fun to fidget with (especially the smaller 24mm one!).

This doesn't seem to work too well when re-scaled, but various parameters (such as box sizes) can easily be changed in the OpenSCAD file.

I used a Lulzbot TAZ 5 and no supports to print these.