1.75mm Filament Clip for the Atomic Filament 1kg spools (They make some of the best filament I've tried). There are two versions of the clips, for the 18 and 32 "spoke" spools. The design is public in Onshape so you can modify it if you want to create versions for other filament / spools.
Remember to come back and post what you've printed as Make.
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