direct drive bowden extruder for 1.75 mm filament

precision extruder is designed to remove filament backlash and work well with flexible filament. designed to be reliable and robust. filament is precision guided into extruder, stepper driver, and bowden cable (see cut-away images showing filament path).

direct drive bowden extruder for 1.75 mm filament. can be used with mk7 or raptor drive gear, 608 bearing, and nema 17 stepper. use 25 mm m3 socket cap screw to mount motor. use cut to length spring such as mcmastercarr pn 9663K180. use