These beautiful puzzles are laser cut here in the UK
Made from 6mm birch ply and perspex.
See the video here
Despite adding 2 seperate pieces the puzzle is returned to the same frame it was in at the beginning!
The wooden version - Impuzzible - is made in 6mm birch ply and supplied in a wooden box with perspex lid.
The perspex version - Clearly Impuzzible - is made in 6mm perspex and supplied in a perspex box with perspex lid.