Filament Spool Holder

A simple filament holder. It will hold spools up to approximately 70mm wide. It can be used on its own, however it will also fit into Rubbermaid 21 cup / 5 liter dry food containers that are popular as dry storage for filaments.

The extras needed to complete the holder are four standard 685 ball bearings (5mm ID, 11mm OD, 5mm wide), and two 5mm axles (5mm metal rods will do just fine). The rods should be cut to length (about 86mm, give or take, size them up against the holder once it is printed). I'd recommend cutting them so that they have about 1mm to 2mm play side to side once installed; if cut too snugly they can extend past bearings and rub against supports. Any metal material should do (e.g. stainless steel, aluminum, etc), solid or hollow, as long as it can support weight of filament roll without getting bent. You'll need something suitable for cutting whichever type of rod you choose.

Bolt cutters will cut through 5mm solid stainless steel rods, but they will leave uneven