Drilling zero-setup

[kievari]

Hi,
I made a pcb with UV exposure method and I'm going to drill it with my cnc machine. What is the best method to setup the X and Y zero please?

I have the probe setup, so for hight I have no problem, but I must use somehow a reference point and just to not to reinvent the wheel, I'd ask that you kindly point me to the most usually/best practiced/practice of it.

Thank you,
(sorry for English, I'm not native!)

[eSilviu]

Hi,
I made a pcb with UV exposure method and I'm going to drill it with my cnc machine. What is the best method to setup the X and Y zero please?

I have the probe setup, so for hight I have no problem, but I must use somehow a reference point and just to not to reinvent the wheel, I'd ask that you kindly point me to the most usually/best practiced/practice of it.

Thank you,
(sorry for English, I'm not native!)

It's easier to first drill and then expose the board to UV