Hex Rail for Prusa MK3 Spool Holder

thingiverse

The MK3 spoolholder by MartinMajewski is a fantastic solution, but I experienced one minor issue - my supports were slightly loose on the frame, causing them to tilt when loading a roll. This problem was easily resolved with the addition of a simple Hex rail that snugly fits into the 16mm Hex on the supports. The result was a much stiffer setup that worked flawlessly for me. Although this solution is quite straightforward, I thought it would be helpful to share my experience with others who may encounter similar issues.