Filament guide for Prusa MK3

myminifactory

Here is a small guide for my Prusa I3 Filament system that will help prevent the filament from jumping out of your spool. The printed part is made with PETG material, which provides flexibility, but other materials can also be used. To maximize the effectiveness of this mod, heat up the part and bend it as shown in the picture to increase the Z height. Be aware that printing at full Z height may cause the extruder to collide with the modified ring, so print at a slightly lower level instead. Also, avoid over-expanding the X/Y dimensions at high Z levels, as this can cause excessive filament bending after passing through the ring. No support material is needed for this mod. Be sure to remove the small overhang support that I added at the top of the part before assembly.