7' X 4' Combi

[Jonathan]

8 Microsteps per full step (1/8 microstep)
200x8=1600 steps per rev (1600 set on the driver)
10mm travel on gantry for 1 revolution of the stepper,
1600 steps/10mm=160 Microsteps per mm set in "steps per" in motor tuning
1mm/160microsteps=.00625mm gantry travel per microstep given 1:1 gear ratio motor to screw.

Perfect :)

where are these extra points you said i could have.