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Thread: Out of sync dual extruder
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01-04-2022, 06:18 PM #1
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- Jan 2022
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Out of sync dual extruder
I have an A20M dual extruder printer of Geeetech. It has 2 similar extruder stepper motors which feed 1 mixing nozzle via seperate bowden tubes.
I'm bussy re-calibrating the printer. And ofcourse began with calibrating the extruder steppers.
But I've found out that E1 feeds around 1mm more (without nozzle connected) then E0 does (feeding 100mm). I can't seperately configure the steps/mm because Marlin 2.0.x seems to refuse this when MIXING_EXTRUDER is configured.
It only shows me 1 E-stepper setting. And it uses the same value for E0 and E1.
Idler spring tensions seems to be equal, so guess this is not the problem.
I also changed the cables from one to another and tested again. Which gave me the same results on the same motors. So it's also nothing with electronics or stepper-driver settings/resistance.
So I guess it's some diffrence in tolerance of the motors itself? Is there a way to compensate the diffrences?
Do bed magnets deteriorate.
04-29-2024, 01:35 AM in General 3D Printing Discussion