difficult puzzles —

Founded difficult puzzles models & stl files for printing
The Key  Puzzle Box
LeisureLuke
LILY OF THE VALLEY
Amigagoma
Read My Mind
Automata3d
Middlefinger
Same_one
GOODIES 1  Coin Of Destiny
PROBLEMSITUATION
Divider for small parts drawer
Electrical_Imposter
Sliding 1x2x3
NK_Cubed