This quick-mount spool holder lets you keep filament out of the way when not in use. Its fully 3d printed no screws or glue are required. It uses the filament's own weight to secure it, so when you're ready to remove your filament just grab the spool, lift, and the whole assembly will come with. Use a scrap piece of filament as the codder pins to hold the cam assembly together and the spool dowel.

The filament guide locks with no tools, my use case was to prevent it from wearing into my desk however it's still handy to keep from tangles. There is a toggle that is printed in place and lets you secure the filament, the rest of it is a compliant mechanism. I added a replacement file even though I have still not worn through mine.

Parts are oriented for maximum strength. (hence the dovetailed spool holder section) to prevent any accidental breakages and to save on filament.

Creality

Ender 3

Yes

.2

30

Fusion 360