At the heart of CNC machining is a digital design, typically created using CAD (Computer-Aided Design) software. This design is then converted into a set of instructions using CAM (Computer-Aided Manufacturing) software. These instructions guide the CNC machine's tools to cut, shape, or drill the material into the final part with exact specifications. https://www.tumblr.com/mctgroup/791133310184259584/understanding-cnc-machining-precision