Fostruder K4 - Dual Drive Extruder
by walter, published
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Dual motor, dual drive bowden extruder. Uses two NEMA14 motors and two drive gears. The two motors should be wired to run in opposite directions, and can be wired in serial or parallel (I would tend to wire the motors in series on a 24V printer and parallel on the 12V printer, but it will also depend on the motors and drivers).
Two screws are used to adjust the gap between the gears, or small springs* can be used for a constant tension configuration.
Here are the parts I used:
- 2 x 0.8A NEMA14 Motors
- 2 x Knurled extruder gears*
- 1 x M5 Heat set brass insert
- 1 x M5 threaded bowden coupler - not the one I used, but the closest match I could find
- M3 Screws (eight M3x20 socket cap screws)
More info about several other dual drive bowden extruders I've just uploaded on thrinter.com
Printed in Inland Translucent Yellow PETG*
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Fostruder K4 - Dual Drive Extruder by walter is licensed under the Creative Commons - Public Domain Dedication license.
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