Ender 3 Spool Holder - Mounts to Stock Spool Holder
thingiverse
Assembly mounts to stock spool holder as shown in picture. Bearings are standard skateboard bearings with an OD of 22mm and ID of 8mm. Requires 3 bearings. Zip tie to original spool holder as needed. I have just left mine loose as it seems to stay in place well.
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