You would require a Bowden extruder to build a pellet-filament engine. There's no way a Mendel I2 or similar models could handle the inertial load on the Y and

You would require a Bowden extruder to build a pellet-filament engine. There's no way a Mendel I2 or similar models could handle the inertial load on the Y and Z axis. And the video shows rather slow extrusion speed. My printer tip velocity is about 2x faster. Dont get me wrong: reduction of filament costs by a factor of 10 is AMAZING.