Knurling is a manufacturing process, typically conducted on a lathe, whereby a pattern of straight, angled or crossed lines is rolled into the material.
Knurling is a lathe machining process that creates a diamond-shaped pattern on a workpiece surface. It is done by using hardened metal wheels with special shapes to enhance the workpiece’s appearance and provide a better grip. This process creates small ridges along the surface of the metal object so that it can be easily handled or lifted.
To knurl on a lathe, you will need a knurling tool and a workpiece mounted in the lathe chuck or between centers. The knurling tool is fed into the rotating workpiece to create the desired pattern. The speed of the lathe should be set to its slowest speed, and the feed rate should be increased to about .025 inches per revolution.