Hi M100,

Sorry for the delay with this. Can I ask have you managed to get the Boxford to run using Mach3 without upgrading all the stepper drives? I did look at this but it looks a bit messy trying to tap into the original stepper drives. I have managed to get my machine running by just bypassing the main stepper drive board and installing my own stepper drives in the cabinet. I have disconnected the power from the original board. The Bradford board I believe is something to do with the tool change system (Z axis), although I think there is a sensor on the spindle for possibly height and angle to aid tool changing which I belive could be performed using a macro in mach3 (apparently).

On running my machine the stepper drives keep missing steps (so a circle becomes a spiral), I think this is mainly due to them being really cheap ones off fleebay. I am thinking of upgrading the stepper drives and totaly ripping out the original boards and starting again.

Happy tinkering.