I was searching for a single print, vitamin-less spool holder that I could attach to the top of my Pursa-Mendel. Unfortunately, there are so many holders out there I was having trouble finding one that fit my criteria. So here we are. This is probably the same background story for all the spool holders out there.

Print it out and be sure to generate support for the overhangs.

Attach to the top rails on your Mendel with zip-ties (zip-ties optional).

Perform 10 fist pumps of victory (not optional).