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help setting Marlin Fireware for a small CNC

Posted by bobdoll 
help setting Marlin Fireware for a small CNC
January 22, 2017 10:18AM

I'm trying to get this small CNC to work with ramps : [www.aliexpress.com]

I was wondering how to calculate the MOVEMENT SETTINGS in marlin firmware ? is there any good tuto out there ?
DEFAULT_AXIS_STEPS_PER_UNIT : it seems that it should be 2560 (nema 17 1/16 microstep on board, leadscrew M8)
DEFAULT_MAX_FEEDRATE ? when i send G code manually, F25 works, anything higher seems to make the motors step and do nothing

Is the a good tuto for CNC to set/calculate those values ?
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