Pellet Extruder with Auger + Moineau screws Version 1.2

v1.2, Monday 7 November 2016
This is an advanced prototype of a (full-parametric, customizable) extruder for plastic pellets that can work for common 3D printers, improved from our previous work: http://www.thingiverse.com/thing:1689212
The parts have to be 3D-printed out of metal (Aluminum and/or stainless steel) by a professional printing service, some can be milled or made with a CNC, and other parts have to be added (stepper motor, couplers, screws, nozzle, fans, flanges, thermistor and he