Kossel 2020 Filament Spool Holder

This filament spool holder is designed to fit atop a Kossel printer that uses 20x20mm extrusions for the upper frame. It uses some printed parts, and some hardware available in local hardware stores in the US.

I used an aluminum rod and bearings from Home Depot to make a simple spool holder that works great.

Parts:
a. (1) ½” Aluminum round rod, cut to length
b. (2) 1-3/8” x ½” Precision Bearing Reducer
c. (2) ½” bore set screw collars (or cable ties work too)
d. (2) Printed