GK-Wood Trammel of Archimedes 3D Puzzle

Trammel of Archimedes
This toy is designed specially for the elder to spend boring time. 
It has a simple shape, hexagon , and can be customized to any shape you like,，
 
How to use
First of all, our product still needs to be assembled by ourselves. The assembly is very simple. According to the instruction, it only takes about half an hour can finish. 
 
It's ready to play when it's assembled, you can turn it around in your hand, or you can fix it on your table with suction cup,