The contractor left their leftover electric conduit pipes (PVC pipes) with 18mm outer diameter. I was in need of some spool holder, hence I created this model.

The model supports 18mm PVC pipes, so anything that's around 18mm should work without adjustment. The length to cut the pipes are up to you, in the picture I used 12mm length for up to 10mm spool width. Just cut 3 of whatever length you desire and you are good to go.

Auto orientate parts before printing, any layer height should work. The PVC pipe are designed to be press-fitted, so no glue is needed.