In this final paper, the working principle of the Mill turn in SolidCAM is described and the steps of the work are explained on an example. The introductory chapter lists the events that resulted in the development of numerical control of machines and the appearance of the first milling machine. With further development, the machines were controlled by computer so CNC (Computer Numerical Control) was developed, as well as multi-axis milling machines. The second and third parts of the paper describe the beginnings of numerical control and the development of CNC control. The development of machines in Croatia and their first factories are also described. Furthermore, the paper describes the characteristics of machining centers and presents the basic division with regard to the type of machining. Each of them is then described in detail. The final chapters elaborate on the term Mill Turn in SolidCAM and why it is increasingly used today. The computer modeling model SolidWorks and the software for programming inside it SolidCAM are described. In SolidWorks, 3D modeling of the test task is first described in detail step by step. Later, through two clamps and turning, milling and drilling operations, the programming of the same task in SolidCAM was shown. Finally, processing simulations are presented.