3D simulator of a classic screw-cutting lathe machine mod. 1K62. The application simulates the performance of ordinary turning operations in an interactive mode. The capabilities of the simulation model include operations of external and facing turning, drilling and boring of holes, turning of grooves, cutting of external and internal threads. In the full version of the application, more than 70 cutting tools are available for work. The graphical user interface is made in Russian and English. Metric and inch measurement systems are supported. The required amount of video memory of the device is 350 MB. The graphical system of the application uses the components of OpenGL 3.0.