Lulbot Mini 54mm Spool Adapter

The filament spools I use from Rigid.Ink have a 56mm Ctr bore.

The spools holder arm on the mini works pretty jerky as its a square shaft.

I made the the simply slide onto the original arm and it works great with the 56mm spools no more jerking. This is designed not to need bearings and gives very low friction due to the small contact areas.

Should work for any spool with an internal bore of 54mm or more.