Turned a $30 shoe rack from Amazon into a filament rack and designed a few custom mods to make it spool-friendly:

Rack Height Extension – raises the shelves so spools have enough clearance (can also be trimmed in your slicer to make custom leveling feet).

Rack Shelf Divider – keeps rolls from sliding out the sides.

Rack Joiner – lets you connect two racks together for even more storage.

Updated Jan 06/2026 - Rack Shelves - designed some rack shelves to put object on that would otherwise fall through (print 2 shelf half's to make 1 shelf).

Updated Feb 22/2026 - Horizontal Rail - I've added some horizontal snap in side rails that print support free and are better then the vertical shelf divider at printing and install.

Simple, cheap, and expandable — a mix of DIY and 3D printing that keeps my filament tidy and easy to grab. STL files are included if you want to build one too!

Amazon shoe rack used in this project - https://a.co/d/8NIFtGX

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Filament Rack

0.2mm layer, 3 walls, 15% infill

0.2mm layer, 2 walls, 15% infill