a simple difficult jigsaw puzzle —

Founded a simple difficult jigsaw puzzle models & stl files for printing
Puzzle 3  The Box
djedje_zr7
Present puzzle
Brett Casteel
Magic box puzzle
BenDeLapp
Puzzle Cube
tmackay
Puzzle Block C
BentWeiss
Puzzle Block D
BentWeiss
Puzzle Block A
BentWeiss
Puzzle Cube
alex_3dprint