tech-tut built a headphone guitar amplifier that runs on a 9v battery. He used his micRo v3 to route the board.
tech-tut says:
I'm using a 60° V-bit at 15IPM. I am using 2" masking tape to hold the boards to a plastic cutting board. The plastic cutting board is screwed to the base. It works very well.
I made 5 - 1" circuit boards last week, and they all turned out perfect.