Dual stepper MK8 gear direct drive bowden extruder 3d model
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Dual stepper MK8 gear direct drive bowden extruder

Dual stepper MK8 gear direct drive bowden extruder

by Thingiverse
Last crawled date: 4 years, 2 months ago
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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