He needs to know what type of signal the servos/steppers work with, then the controller. I have not been here a couple of months but from when the ACORN is the recommended controller for retrofit? I hear for first time they have a cheap DIY controller. I agree that the original controller looks very good, so i dont see the point.

Does the machine has more complicated functions like tool changing, 4rth axis, or is just 3 axis router for stone engraving?