Thanks for chiming in with your thoughts Rick...although I disagree that diameter doesn't matter, mainly because of things I brought forward in my dissertation. Like Paul, I get clean, sharp, Consistent knurls every time by using the calculator, but each to his own devices. In my research I talked with a lot of people about it, but there were a couple of old timers that said they just "jam it in" till you get a good one. The inconsistencies I got by the "press on" approach, cost me a lot of parts...plus all the other variables make it even more difficult to achieve every time. I like sharp clean knurls mainly because I make a lot of small stuff <2" (max of my scissor) and only have a tiny import lathe that only dreams of being a Hardinge HVL-H or a Clausing.
Paul, I agree about brass and use it quite of bit for thumbscrews and such. Turning by hand does give the best result I feel, but sometimes do it at lowest speed (~150) for maybe 15 seconds at a time, with pretty darn good results...especially if I'm within a thou or so of diameter. I spritz with WD when under power and seems to help push the flakes away...with safety glasses of course. Interesting Idea about using chalk?? I would think it might cake in the knurl tool and not give sharp peaks under that kind of pressure.
FYI for everyone: On my little website, Google has finally killed not only my Online Calculator but also my Contact Me form. They appear to have gone to the almighty App approach to these things. Honestly I don't have it in me anymore to fiddle with the Online Calculator version anymore than I have already and don't want to learn Another language or sort through their help/forum stuff at this stage of my life. I did find a back door to the email but its a pain also. If anyone on the forum would like a copy of the Excel spreadsheet, you can PM me here with an email address to send it to and I am happy to share and send it!
Till Then, May your knurls be Clean, Crisp and Consistent!!
~PJ
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