Celtic Ring Puzzle

thingiverse

I really like Itai Nahshon ring puzzle (https://www.thingiverse.com/thing:3311600). While I was solving it, I had the idea of making a version with multiple rings interlocking like a chainmail, with the string weaved around. I didn't even knew if the puzzle would be solvable, so I made my first prototype out of cardboard. I decided to go with a simple version, only 3 x 3 holes, 5 rings. The configuration of the ring reminded me of a celtic knot, which eventually became the name of this puzzle. My first version was too small, the finger could not get through the holes to pinch the string. So I made a larger version. **Customizer note**: It's customisable, but the Customizer app is using an old version of OpenSCAD which doesn't support partial rotate_extrude. If you want to customise it, I would recommend to download the scad file and customise it using OpenSCAD.