3 Axis CNC router

[Neale]

I reckon that will be OK. I run my limit switches differently; one cable from the control box carries +24V and ground (along with something else I forget) and another carries all four limit/home switch connections (2 for X). I take the screens to the star ground. I haven't found any noise problems at all, which is the main concern, but as you are using 24V signalling rather than 5V as with many BOBs, you have a lot more intrinsic noise rejection anyway. Will you be able to run your stepper motor cables away from the signal cables? Having said which, again on my machine, the stepper motor cables, limit switch cables, and spindle motor cables all run through the same cable chains. They are all CY cable. I've tried to separate the motor cables from the others by putting the cooling water pipes between them, but again, no problems found with that setup.