Obviously I never done this before but this is what I did.

My motors are from Keling, 282oz.in, 8 wires, and connected as Unipolar. The +/- of each coil is connected to the respective +/- on the driver board and the remaining 4 wires are all tie together and are connected to one of the common terminal on the driver board.

My ACME screw is precision made 1/2”-10, ten turns of the screw = 1” of table movement.

The motors are 1.8 degrees per step = 360 degrees divided by 1.8 degrees = 200 steps = 1 turn of motor shaft.

To make the machine move 1”, the screw will have to turn 10 times multiply this by 200 steps we get 2000 steps for 1” movement (Full Step)

So I have set mach for 2000 steps in the motor tuning.

If I want to set mach for Half Step, the new steps in the motor tuning will be 4000.

Perhaps I got it all wrong, is the above correct?

Thank you

Nicolas