Patrick Built his own CNC machine
Patrick from Buildyourcnc.com talks about making his own computer numeric controlled machines. He originally started the project to make parts for a hobby, but now uses his machine to cut parts that he sells as kits so others can make their own machines. It is the machine that can make its own replacement.
His website has lots of information for people looking to get started making machines that can be controlled by computers.
Site Link: buildyourcnc.com