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Thread: BMG Extruder upgrade questions
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10-16-2022, 04:26 PM #1
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BMG Extruder upgrade questions
Sorry for my ignorance here. Hope someone can help.
I use my 3D printer occasionally, so I have to re-learn many things when I upgrade or make changes. I currently have a Geeetech "Prusa I3 X" and am upgrading to a BMG extruder - so I'm moving from a direct drive to a 3:1 gear ratio. In printing carriage parts, I've had to flip the drive belt, so I also need to change the direction of the X motor.
I'm always a bit confused which settings I change using the Arduino configuration.h file, what I change in the Slicer, and what I change in the software settings. I currently use Repetier-Host with Prusa slicer.
So with this basic confusion, where do I change:
1. The new settings for the BMG extruder (extrusion ratio/speed), XY offsets (from the endstops) for the new nozzle location?
*edit: I think I found the Extuder E-step value:
#define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 2560, 415 } in configuration.h - 415 is for BMG.
2. Change the direction of the X motor?
Thanks for the help. Or if you can point me to the right resource - that would be great.Last edited by dore_m; 10-16-2022 at 04:48 PM.
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