Oversize Donut-Topped Filament Channel

thingiverse

I redesigned the filament channel on my 3D printer because my original one would chatter when rubbing against the sharp edge of the standard filament holder's included channel. To fix this, I created a slightly oversized 'donut-topped' filament guide with no sharp edges to catch the filament. This design also provides extra room for the filament to flex under maximum deflection as the extruder moves across the X-axis. Printing it in a smoother material (IC3D Black ABS) made an even bigger difference than my first attempt with ProtoPasta CF-PLA.