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New Lead screw for Z axis
Mario Wurzinger
Posts: 12Member
Hi,
I got a new lead screw with 8mm lead. Now I did a change in Marlin at configuration.h
I changed the following --> #define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 100 }. The 400 are the new value. Before it was 800.
Is this correct?
I got this screw: https://www.amazon.de/gp/product/B01LXHXUN1/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
The quality is really amazing!
Thank you
Best Regards
Mario
I got a new lead screw with 8mm lead. Now I did a change in Marlin at configuration.h
I changed the following --> #define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 100 }. The 400 are the new value. Before it was 800.
Is this correct?
I got this screw: https://www.amazon.de/gp/product/B01LXHXUN1/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
The quality is really amazing!
Thank you
Best Regards
Mario
Comments
You can also set the steps per mm via gcode and save to eeprom:
M500 ; save eeprom
Thank you!
I did a first test on this values. Does not seem to work properly.
Do you know this calculator?
https://blog.prusaprinters.org/calculator/
Therefor I need the right values for "Motor step angle" and "Driver microstepping" which I dont know.
Well, I will do some more tests on it.
But I already did a change in Marlin.
Current value: #define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 100, 100 }
The new lead screw also got 4 start points. Maybe this has also an effect.
The command M502 does solve the problem.
BR
Mario
so how was the update from 4mm to 8mm
can you shear some info and your experience with the change in quality of print
4mm x 1.9º/step = 0.02mm per full step
8mm x 1.9º/step = 0.04mm per full step
I don't understand why you would want to change 4mm -> 8mm, I can understand 8mm -> 4mm though.
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