The file 'Hanayama Cast Diamond Puzzle 3D Printer Model' is (stl) file type, size is 5.1KB.
A cool twist puzzle I found online and then modeled. Usually takes people a few minutes to figure out how to get it together.
Print two copies of the model, and then they'll twist together. Very low tolerances, so you might have to remix if your printer isn't especially precise.
Video on how to solve: https://www.youtube.com/watch?v=BKkbVMp6ssY
Hanayama_Cast_Diamond.stl | 47.7KB |