Summary

Simple, no frills spool holder.

Instructions

Using Bones Red skateboard bearings because I happen to have some lying around and spin very freely. They are also known as the 608 bearing in the industry.

There are four things to note.
1) The caps for this build were made to fit the spools coming from Matter Hackers which have a 31mm diameter hole.
2) The round hole in the stands.stl file are made so the bearing have to be press fit. A slight sanding may be needed.
3) I have included a list of both metrics and American in case getting access to metric parts is not possible.
4) There are two versions of the holder. The one I used required supports to keep the print where it is. An "option" version is available so supports don't need to be made.

Things needed (American):
5/16" threaded rod
5/16 nuts
A few washers for the 5/16" threaded rods
608 bearings or skateboard bearings

Things needed (Metrics):
M8 threaded rod
M8 nuts
M8 washers
608 bearings or skateboard bearings

Spool Holder