A computer numerical control (CNC) router is a computer-controlled cutting machine which typically mounts a hand-held router as a spindle which is used for cutting various materials, such as wood, composites, metals, plastics, glass, and foams.

CNC wood router is a machine that automatically cuts the wood in a variety of shapes and sizes without any interference of human. This computer numerically controlled machine works on the Cartesian system (X, Y, and Z) for 3D motion.

A 3-axis CNC machine can produce more complex shapes than a 2-axis machine. It is also easier to set up and maintain. It is less expensive than a 2-axis machine because the drive motors are not needed.