Planetary Geared Extruder

This is a variant of Nylocke's and Glacian22 EZFlex extruder. It is a direct replacement for Seemecnc's EzStruder.
Designed for use with 1.75mm filament and a Nema 17 Planetary Geared Motor.
Like Glacian22 extruder, it can handle flexible filaments very well.

Nylocke's design: http://www.youmagine.com/designs/ezflexstruder
Glacian22's design: http://www.thingiverse.com/thing:744759

I'm not good at explaining the assembly in english, so I hope the pictures can show it clearly.