CNC Machining - Knurling is definitely an Art. You can get 10 different Machinists from 10 Different CNC Machine Shops and chances are, each will have a slightly different looking knurl. Even when a specific knurl is called out on a print, it’s best to ask for a sample to be supplied... as what is intended, is not often specified. In this video, Tyson teaches you a proven method that will give you a great knurl every time. Here is more info on the Straddle Knurl Holder we used for this application. We do not know or work with the below company but figured we would give you the info: http://www.formrolldie.com/serv02.htm Tool: OR SH-KP Knurl: KP Knurl Pin: C 164