Diamond turing is a multi -stage process. The initial stage of processing is performed using a series of cnc lathes with a series of accuracy. In the final stage of the manufacturing process, the diamond lathe tool is used to achieve the smoothness of the nano -level surface and the shape accuracy of the sub -micron level. [Need to quote] Surface smoothness quality measurement is the groove left by the lathe. The shape accuracy is measured as the average deviation of the shape of the ideal target. Use contact and laser contour, laser interference instruments, optical and electronic microscope to monitor the surface quality and shape accuracy during the entire manufacturing process. Vajrayana is most commonly used to make infrared optical devices, because at a long wavelength, optical properties are not very sensitive to surface smoothness quality, and many materials used are difficult to polish in traditional methods.

Temperature control is very important because the surface must be accurate at a shorter distance than the light wavelength. Several degrees of temperature changes during processing can change the shape of the surface, which is enough to have an impact. The main axis can use a liquid coolant to cool to prevent temperature deviations.