This is revision of GREEN MAMBA V1.3/V2.0 EXTRUDER: https://www.thingiverse.com/thing:3727496
Extruder is revised to tighter filament guide for printing flexible filament (check uploaded image). Additionally, filament tightening knob and extruder drive knob are added. Knobs are designed using Parametric potentiometer cap-knob: https://www.thingiverse.com/thing:3405786
GREEN MAMBA V1.3: https://www.thingiverse.com/thing:3727407
GREEN MAMBA V2.0: https://www.thingiverse.com/thing:3260169
JB86
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