think&have torque extruder

This is a powerfull bowden extruder with a 2:1 reduction ratio. It uses a special drivegear running on a ball bearing and the filament is guided through a PTFE (teflon) tubule.
With a 2A NEMA17 steppermotor we measure a pulling force of above 7000 pond (ca. 69 Newton).

Driver.stl should not be printed. It has to be made of brass or steel.

printed parts:
attached stl, except driver.stl

other materials:

1 special drivegear made of brass rod 10mm diameter, 30mm length,
1 ball bearin