Ender 3 Spool Spacer

UPDATE 4/22/19 - Redesigned the spool spacer as the original was a bit too loose in the rod. Original had a .4mm gap SpoolSpacer_V2 is made with just a .1mm gap. Possibly just due to tolerance issues.

This is a simple design, and also my first use of Fusion 360 or any CAD program. I wanted something that would take up the extra space between the stock Ender 3 filament spool holder rod and the inside of the spool itself.

Before, the hole in the spool was so much bigger than the rod that it would cause my filament to hang off center and periodically jump when extruding, which caused tension and underextrusion. This makes the spool sit much closer to center and spin more consistently.

This takes into account the lip on the stock Ender 3 spool arm, which I noticed all the models similar to this required grinding off the lip and I did not want to modify the arm.

The spool holder was designed to fit Hatchbox and Amazon Basics spools, but will fit any spool with an inner diamet