Ender 3 / Ender 2 / Creality CR-10 Extruder Knob

Just a simple geared knob for my CR-10 extruder.

Fits most printers with Nema17 stepper motors or generally with 5mm shafts.

An easy way to manipulate the feed and a nice visual tool to spot your retraction behavior.

It is a very very tight fight. You may want to upscale it by 0.5-2%

Update 01/03/2018

V2 High Clearance / Extended version

Added a high clearance version so you can check the filament rolling between the gear and the pulley.

Gold is the short version (v1)

Gray High Clearance / Extended version (v2)