Improved Mini Extruder: Layered Moineau based Pump

We have improved the performance of our on "Layered Moineau based pump: Model 131313" by @SciFabLab -see: http://www.thingiverse.com/thing:1840527 for pumping a controlled quantity of viscous material in vertical direction.
See more details at: https://osf.io/preprints/8yyms (see also video at https://www.youtube.com/watch?v=hEEVL4I48Rk)
We have rounded up all layers to avoid any flux lost due to the induced high pressure inside the pump. The Layers form a cylinder (that may be heated up wh