First off, hello everyone. I've been a long time lurker and finally decided to register on the forums. I have built a 3D printer (a RepRap) and now have the CNC bug. I'm trying to hobble together a PCB mill using junk parts (just to make it a challenge) and I stumbled across this thread. I'm going to be using an RC brushless motor for my setup. Now that the introductions are over, on to the topic at hand.
Here is an example of one that can supply 60A on the 12v rail for ~$100