Spool and desiccant holder

I looked at several other spool holder designs around the internet, and none of them were quite what I wanted. They all had large footprints, complex designs, or required too many additional components to make work. So I designed this simple one.

It should be pretty easy to assemble, needing only four 608 bearings.

Printing should be pretty straightforwards, with only a little bit of support needed for the bottom of the spools. If you've got your bridging dialed in well, you don't even need that

Assembly

1. Remove any supports from the bottom of the rollers, ensuring the holes are clean.
2. Press the roller support pin into the hole at the bottom of the roller. The pin is hexagonally keyed to the roller, and tolerances are tight, but doable.
3. Place bearings on each side of the roller
4. Place the roller-bearing assembly into the slot on the base
5. Add desiccant
6. Add your filament spool
7. Enjoy

You can use any 608 bearing, or any other bearing with 7mm width, 8mm center hole, and 22mm diameter.