About this 3D model

This is a fun and easy little project to make. The solution is not intuitive so it might be a challenge for your friends and family. See solution video if you can't figure it out. Build Instructions (wood version): https://www.instructables.com/id/Rope-Puzzle/ Similar version on Amazon: http://amzn.to/2BhqxR7 Solution: https://youtu.be/GjAaKq9jkXU