Tronc Commun 4

A difficult TIC puzzle (turning interlocking cubes) invented by Gregory Benedetti. This puzzle is very rare, I have never seen a wood copy. You can find the design at https://puzzlewillbeplayed.com/666Cross/TroncCommun4/

I used a cubie size of 13 mm. This was a nice exercise for me to learn PuzzleCAD. I include the design file in case you want to change anything. Please make copies for your own personal use only.

Seven pieces. During assembly, every piece requires rotations except for one. Getting the first three pieces together in the correct orientation is challenging. On youtube, you can find a video showing the assembly. https://www.youtube.com/watch?v=36qgjPAii5E