Dual Extruder Steps/mm
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Is there a way to set different steps/mm for 2 extruders? I looked at the M92 docs and didn't see any. My extruders are both Bondtech BMGs, but from different vintages. But the hot ends are quite different and even though in theory that shouldn't change steps/mm, something does. I got my primary zeroed in with 932.4 steps/mm, but the secondary pushes through 107mm instead of 100mm. So I really need something like 871.4 steps/mm for the secondary.
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@fcwilt Are you sure that works? The documentation for M92 appears to suggest that will use 123 for both:
"RepRapFirmware does not support individual motor settings where an axis has multiple motors connected to different stepper drivers. The first parameter specified will be used for all motors on the axis. You should use identical motors on any axis that has more than one motor to avoid unexpected behaviour.
Example: If you have two motors on your Z axis, physically connected to Z and E0 stepper drivers, configured with M584 Z2:3, set M92 Z80, not M92 Z80:80"
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@donstauffer said in Dual Extruder Steps/mm:
@fcwilt Are you sure that works? The documentation for M92 appears to suggest that will use 123 for both:
"RepRapFirmware does not support individual motor settings where an axis has multiple motors connected to different stepper drivers. The first parameter specified will be used for all motors on the axis. You should use identical motors on any axis that has more than one motor to avoid unexpected behaviour.
Example: If you have two motors on your Z axis, physically connected to Z and E0 stepper drivers, configured with M584 Z2:3, set M92 Z80, not M92 Z80:80"
Extruders are treated differently.
From the M92 docs:
Examples
M92 X80 Y80 Z80
M92 E420:500 -
@fcwilt I see. It wasn't clear to me what an "axis" was in terms of exrtruders. That's good! I can set them individually. I'm happy.
