Filament Spool Holder

This is a filament spool holder I designed in Tinkercad. It is adjustable to hold any size spool and allow it to roll freely with minimal friction. The first roller has two screw holes to mount to a board or whatever surface, and the second roller fits on and adjusts as needed.

Hardware needed:
608ZZ bearings (4)
5/16x1½" bolts & nuts (4)
Screws for mounting

I have several empty filament spools that I hate to just throw away, so I wound yarn onto them and designed these rollers to use while knitting so I don't have to deal with a yarn ball rolling all over the place. I'm sure there are several more applications for these rollers, so let me know if you use them for something cool!