Filament Spool Roller Base for Ender 3

thingiverse

This is a straightforward substitute base piece for rc101's first-rate snap-together roller base. I created this because I got a bit anxious about the base moving around during an extended print while unattended. Not that I ever had a problem, but we all know Murphy's Law... My replacement part swaps out one base piece per side and enables you to connect both roller assemblies to the side of your Ender 3. The tabs slide smoothly into the lower extrusion channel, and if desired, you can also secure them using the factory hardware from the stock spool holder. While being more secure, the spacing remains adjustable for different width spools. As an aside, I found this roller design works really well with p/n F608ZZ flanged bearings. The flanged bearings eliminate the need for the "roller guides" in the original design.