Homebrew PCBs

I just started to become interested in making some
PCB's and have a very fine step cnc. It has a 8 x 8
inch foot print with steps at over 50,000 per rev.

I wanted to ask for suggestions on a good PCB program
to cut these. This is just a hobby so nothing over the top.
I have bits and micro drills already and a fast spindle.
I just want to lay out and cut some small boards at first.
Thanks,
Mark