Parametric Herringbone Gear Set for Huxley extruder #30DoC
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Published on June 2, 2012
Description
This is a set of herringbone gears using the SCAD Script from Triffid Hunter, but with settings for smaller Huxley (eMaker / RepRap Pro) extruders that use M6 hobbed bolts and a Nema14 motor
Enjoy perfect printing with Huxley.
Made for Day 2 of 30 days of Creativity #30DoC - 30daysofcreativity.com/
More on my blog - richrap.blogspot.com
Enjoy perfect printing with Huxley.
Made for Day 2 of 30 days of Creativity #30DoC - 30daysofcreativity.com/
More on my blog - richrap.blogspot.com
Instructions
They are a little tricky to fit onto the extruder body, take your time and get the motor aligned first, fix the motor tightly, then tighten the hobbed bolt onto the large gear, fit washers and bearing and slide both the large motor into the body and at the same time the smaller gear onto the motor shaft, tighten up the smaller gear to the motor shaft.
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License
Parametric Herringbone Gear Set for Huxley extruder #30DoC by RichRap is licensed under the Attribution - Creative Commons license.
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Hi Richard,
I'm just about to print a set of these on the quest for 'the perfect huxley print'...
...do you need to change the E steps setting in firmware after changing to these gears from the original RepRapPro Huxley ones? The have different ratio and I'm wondering if this affects the number of steps neede
d.
Hi Andrew,
Yes the Esteps will need to be calibrated for this change, should not be too different. Let me know how you get on, My Huxley is having a refit at the moment and is out of action. I'm just about to be using this gear set on a miniature direct drive extruder, done for Day 4 of #30DoC.
Cheers,
Ric
h.
I don't own a huxley, but you should have to change the steps if the gear ratio isn't the same. You should be able to do this by doing
STEPS * NEW_RATIO / OLD_RATIO
and get either the exact new spot or very very close to it. Depending on if it's going up or down you may also want to check the current settings on your stepper, you might be able to lower them to get better lifetime out of the stepper or have to turn them up since you might need more torque.