Ender 3 Pro Spool Adaptor

********** UPDATE: Opened up the tolerances a little. It was too tight of a fit! **********

So far, this works with Hatchbox, 3D Solutech, and Dikale spools (I will add more once I have tried different brands).

The stock spool holders diameter is so small that I found my spool of filament would bounce and jerk... this adaptor eliminated that and allows for a much smooth feed.

Just slide it in the spool first, then slide the spool with the adapter onto the existing holder.