Non Sucking 3D Printer Mk2

UPDATE 2021-07-25: I reverted it to "work in progress" because I am not happy with the bowden tube drive system (forcing me to use pressure advance with large factor, limiting print speed) and some other small things.

I tried different versions for driving the filament: bowden, remote direct extrusion and currently, I am trying a 22:1 geared direct drive system (with a tiny NEMA8). The design will remain "work in progress" until I am happy with it.-

Other things that are being re-thought a