Editing Computer numerical control (section)

===Cartesian coordinates===
The G & M code positions are all based on a three-dimensional [[Cartesian coordinate system]]. This system is a typical plane often seen in mathematics when graphing. This system is required to map out the machine tool paths and any other kind of actions that need to happen in a specific coordinate. Absolute coordinates are what are generally used more commonly for machines and represent the (0,0,0) point on the plane. This point is set on the stock material to give a starting point or "home position" before starting the actual machining.