Magnetic filament guide

I designed these to help route filament around my workbench where vertical space is at a premium. They stick to the bottom side of the steel shelf above using magnets and can be easily moved around as I reconfigure my printers and multiple spools of filament. The guides have some dots for extra grip, which helps when prying the magnets off.

Two 2mm x 10mm magnets can be installed into each slot (4 slots per guide, so 8 magnets per guide) via a friction fit or using superglue. If you want to use differently sized magnets, you can edit the attached design files in Autodesk Fusion.

To help filament slide through the guides, I recommend cutting a section of PTFE tubing like https://www.amazon.com/dp/B07B8CK8L9 (3mm inner diameter, 4mm outer diameter).

Also pictured: https://www.printables.com/model/120198-spool-holder