Ender 3 Dual Extrusion Spool Mount
thingiverse
Dual extrusion upgrade? Have two colours that you're constantly swapping back and forth between? Have a spool with a small hole in the middle? Give this a shot! It simply replaces the little "nut" or "collar" that holds the original holder in place. It features the same "teeth" that click over the bumps on the holder and keep it held firmly in place. It should easily hold a kilogram.
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