Using a tool called a ‘diamond graver’, which consists of a steel shank with a conical pointed diamond embedded in the end, which has been shaped and polished to a mirror finish. Diamond drag engraving is a process where the non-rotating diamond graver moves across the surface of the material without the use of a spindle motor, which allows for high-quality engraving on hard metals such as stainless steel, anodized aluminum, and hard steel.