Spool Saver - Oneway Filament
thingiverse
Made for guiding the filament and preventing loose ends from reaching the spool. Works great! Prevents unwinding of the filament when the extruder moves or breaks. Simply adjust the weight on the level to ensure proper operation. I added a small elastic band for extra grip on the rotor, but it works fine without it too. Designed to fit 1.75mm filament on an 8mm frame, compatible with popular models like the Anet A8 and Prusa i3.
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