3D-Puzzle Japanese Crystal

Can you solve this 3d puzzle? It consists of 51 parts. In original size each cube has an edge length of 2 cm (little smaller because of some tolerance), so the whole puzzle is 22 cm long in every direction.

Difficulty: Medium

Print instructions

Is a very easy print. The stl file contains all the needed parts. Just separate them scale them to your size and your ready to print. When placing the parts in the right direction no supports are needed.