i am using a cnc router as a large 3dprinter and i have 2 steppers in the x axis and so im using the other extruder driver to run the other x stepper. Still need to play around with the acceleration as the table jerks around alot on short passes.
M566 X0 Y0 Z12 E120:0 ; Set maximum instantaneous speed changes (mm/min)
M203 X30000 Y30000 Z960 E1200:30000 ; Set maximum speeds (mm/min)
M201 X100 Y100 Z100 E100:100 ; Set accelerations (mm/s^2)
Got it printing for the first time today so now i just need to make fine calibrations.