Our Diamond Burnishing Tools have actual diamond particles embedded in its surface. The tool is rotated over the surface of the workpiece, applying pressure to the surface and smoothing out any imperfections. Diamond burnishing can be used to improve the surface finish, reduce roughness, and increase the surface hardness of the workpiece. It is often used on metal surfaces of hardness up to 55 HRC, and can be used to achieve high levels of surface quality and precision. The process can be performed on a variety of machine tools, including lathes and milling machines.