Ender 3 spinning spool modification

This is an adapter which converts a standard Ender 3 spool holder to make it spin. It was designed to stay as close as possible to the original hardware, so it should be compatible with all spools.

Like most similar items on thingiverse, you will need a pair of 608 bearings. In addition, this requires a threaded rod. I used a 5/16" rod cut to 14cm (5.5"), plus two matching nuts. (Note that the 5/16" rod fits perfectly inside a 608 bearing. The big orange store sells 12" 5/16 - 18 tpi rods for $1.30.)

This includes a customizer, so if your specific spool holders dimensions are a little different from mine, or you have a different size threaded rod, then you should be able to tweak it. It seems like Creality makes frequent tweaks to their parts, so check your dimensions before printing.

My printer settings were 60% infill, no supports, 0.2mm quality.

I only needed 30g of filament to print all the parts. The strength comes from the rod, so you don't need to