Spool holder for K8200

This is a simple spool holder for the K8200 with 6mm threaded rod.

Just print two and put on threaded rod with locknuts to locate.

It doesn't use a ball bearing but just runs on the rod itself. So it's easy to make with no external parts. With a bit of tape on the rob it runs smoothly and much much better than just resting the spool on the rod!