Under-desk Horizontal Spool Holder

Filament spool holder that can be mounted under a desk, holds the spool horizontally. The top plate is attached to the bottom of the desk using screws or double sided tape. The lower holder goes through the spool and snaps magnetically to the top plate. The lower part and spool rotates around the thrust bearing. Useful for those who have issues with keeping horizontal surfaces clear.

There are two different spool posts, a short version that works with most narrow spools or spools with an inset (e.g. Atomic Filament), and a longer version that works with most spools, including the wider ones.

Uses a [14mm thrust bearing*](https://www.banggood.com/10pcs-F6-14M-6x14x5mm-Axial-Ball-Thrust-Bearing-6-x-14-x-5mm-p-1160827.html?p=EY011634303112016018) and [15mm magnets*](https://www.banggood.com/5pcs-N50-15mm-x-3mm-Strong-Round-Cylinder-Magnets-Rare-Earth-Neodymium-Magnets-p-984648.html?p=EY011634303112016018). I used 3 magnets on top and 5 on the bottom, that should be strong enoug