Dual stepper MK8 gear direct drive bowden extruder
thingiverse
Having dual steppers driving an extruder allows to use 0.9 deg/step motors for more accuracy or 1.8 deg/step steppers for increased torque. Largest benefit is gained if used with a dedicated stepper driver instead of connecting the steppers in series or parallel to one stepper driver. Additional parts needed: - 2x MK8 drive gears - 2x 625 sized bearings for filament guiding - 8x M3x12 DIN 912 screws for mounting to stepper motors - 4x M3 nuts - 2x M3x16 DIN 912 screws for fixing the extruder halves together - 2x M3x10 DIN 912 screws for adjusting drive gear pressure against the filament - 2x M3x12 DIN 912 screws for holding the bearings in place - 2x M3 washer for holding the bearings in place - 2x pneumatic push-in fittings with M5 threads for the bowden tube diameter in use
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