i3 Spool Holder With Bearings
Need 1 each 5/16-18 x 6" all thread bolt, 4 each 608 bearings, and 2 each 5/16-18 nuts
Redesigned the below link for i3 because my spools were chaffing on Prusa handle;
https://www.thingiverse.com/thing:1805648
The author remixed this model.