About this 3D model

This was created to help people who like to design and build their own jewelry from copper/silver wires. There are two different mandrels: 1) Has odd ring sizes 3, 5, 7, 9, 11 & 2) even ring sizes 4, 6, 8, 10, 12. This device will help you tie the wires for various ring sizes with precision. Enjoy!