CGS (Conrad Gear System) Extruder; yet anther metal gear extruder

User alocinb asked me to publish this one, so here we go

# Purpose
I designed this since the Gregs Wade was too bulky for my liking and I liked the idea of having a metal gear.

## Use
3mm filament. Intended for sparkcube but not limited to (uses standard gregs flange)

## Design Concept
The extruder uses standard metal gears available at www.conrad.de namely a 12 teath gearwheel and a 60 teeth gearwheel. The 60teeth gearwheel runs a cut down (to 35mm) standard M5x50 screw driving the