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.

G54 to G59 are codes that assign different work offsets to your CNC machine. Each code corresponds to a different coordinate system that you can set and use. For example, if you use G54, you are telling your machine to use the work offset 1, which has its own origin and axes.