Puzzles and tolerance test for my 3D printer.
I love this Impossible Puzzle!
You can download it here: https://www.thingiverse.com/thing:654...
It is just one part, to make the puzzle work, print 4 of them and the puzzle is to assemble and than take it apart!
The tolerance test STL file can be purchased here: https://makersmuse.gumroad.com/l/OxKwn
He is a fantastic guy who has videos how to .... with 3D printers.