Machine knurling is ideal for cylindrical products like knobs and handles. The machine knurling process produces a textured surface that improves the user’s grip to reduce slippage. The process is typically accomplished on a lathe using a special knurling tool.
When designing products like knobs and handles, it is beneficial to keep the hands of the user in mind. Consider hand size, ambient temperature, and whether or not hands will be gloved. There should also be plenty of clearance from surrounding components. This will allow the user a free range of motion.
Face-knurling can be machined on flat surfaces and is typically accomplished on a mill. This process is ideal for reducing slippage of products that may contact surfaces like carpet.