Spool Roller - Ender3

UPDATE: Some people have had good luck printing a new spool holder to go with this roller: https://www.thingiverse.com/thing:3041037

NOTICE: Several people have printed this model only to find it is TOO SMALL and doesn't fit. Before printing, please measure your spool hanger and make sure it is 1.25in (31.75mm)OD or smaller. If yours is a different size please post a comment and I'll update the model for your version.

A spool holder upgrade for the Creality Ender3. Designed around a Hatchbox spool with a 54mm ID, and the stock Ender3 spool holder with a 1.25in (31.75)OD.

This should print all together with no supports. The radial clearance from the rollers to the carrier is 0.3mm so the printer will need to be nicely tuned and not creating strings or artifacts. The rollers still may need to be manually broken free.

A keeper of some sort is required to keep the spool from wandering off. There is just space for an 1/8in spacer to fill the gap and secure the spoo