Robo 3D Knurled Extruder Knob

pinshape

I made a modification to the filament changing interface on my Robo3D printer by replacing one knob with a single knob, which I enlarged to prevent slippage issues. This change has not caused any problems and allows for easy removal of the old filament while changing new one in front of me with the use of an added mirror. The use of a weaker spring and a ninjaflex grommet helps prevent it from flying across the room, which saves time and stress, especially when mid-print changes are necessary. This is a straightforward upgrade that significantly improves ease and convenience, requiring only two replacement bolts (M4 Hex head, 50mm), which I was able to source at a local True Value store. The new design is slightly snug, but tapping it in without cracking the plastic is possible, and scaling up a bit will make it easily removable.