It's begun....

[Jonathan]

My first guess is the following in order from SW1 to 8: OFF, ON, OFF, OFF, ON, ON, ON, ON which should translate to Peak Current 4.09A, RMS Current 3.32A, Standstill=Half Current, Microstep=4, Steps/rev=400 - I have no idea if this is correct although one of the manuals mentions setting the Amp rating to the closest for the motor and 4.09 seems to fit that bill.

That is correct. Also depending on the feedrate you get and the kernel frequency your computer will support you may be able to use 800 or 1600 step/rev which will help the machine run more smoothly.

[Washout]

Quick update - powered up the control box and nothing has sparked or smoked, which is nice.

The steppers seem to have power to then as they are making a slight humming noise and the ballscrews are now solid (i.e. I can't hand turn them). However, I can't seem to get any movement from the jog control or up and down cursor keys in the motor tuning dialogue. Also I have green LEDs lit on the drivers, which I also consider a good sign.

I've probably missed something silly in Mach3 so will watch some more tutorials and see if anything jumps out at me.