Quoted from TigerLaw:What is the CNC machine?
It's a tool that automates cabinetmaking and other machining. I don't know exactly which CNC machine in this case but here is a good explanation of how they are used in cabinetmaking. http://www.shopbottools.com/mApplications/cabinetmaking.htm
A simple explanation is instead of a person making the cuts it's a robot making them. You load a program into the CNC machine, clamp the work piece into place and press a button.