Print this x2 with supports and add it to thing:3421762.
Designed to match the curvature and angles of the nuts using fusion360.
will allow supporting of larger diameter spools. I specifically printed this spool holder as it is the most simple and effective spool holder i could find. Does not require any baring's as the model is a baring itself. super quiet and easy to print and mount. 

• link to model this works with: https://www.thingiverse.com/thing:3421762
• print with supports
• 0.2mm layer height
• 30% infill

happy printing.