In modern times industry is unimaginable without CNC machines (CNC = Computer Numerical Control). Application of CNC machines is wide and they are machines of high versatility. The reason I chose this topic is I work with CNC machines daily and am involved in making concrete products. Work on a CNC machine requires basic knowledge of technical documentation (i.e. markings on technical drawings, standards, tolerances) and basic knowledge of engineering (i.e. coordinate systems, orientations etc.). CNC machine programming can be done in several ways: ISO programming (through G-codes), by hand programming (programming through symbols and drawings) and CAM programming (3D programming – complex drawings or models are turned into machine code via a postprocessor software). Besides CNC machine programming, we should also look into the physical components of parts production. First, short history of CNC machines will be given, followed by their development, after which vital parts of a CNC machines and their logic will be explained. Next, tools for CNC machines will be discussed, and the concrete process of making a part designed in SolidWorks will be presented. Finally, transferring a 3D model from SolidWorks to AutoCAD will be shown, where we will get a 2D shape from which we extract the coordinates and manually write an NC program, which we then input into a CNC turning machine to produce the final part (a positioning axle).