Filament Spool Holder - Bearings and custom width
thingiverse
Low-profile filament spool holder, perfect for keeping your filament right next to your printer without hogging too much space. Use four skate bearings (inner diameter 8mm) and press them firmly onto the stud - if they're a bit too tight, just sand down the surface slightly. You can score these cheaply on eBay. The screw allows you to adjust the width as needed. Secure the knob with some glue. This design should fit most spools; feel free to leave a comment if you have any questions or suggestions for improvement. Happy printing!
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