Ken,
Are you knurling in production or just for looks? The standard variables are the number of teeth required on the circumference, the blank diameter, and the number of teeth per inch required on the roll. Hu flung dung is correct with feeding in hard. When knurling you are displacing material. The material from the root of the the knurl is flowed to the crest. Once you get the material moving, you want to keep it going. I have some information, tables, and formula's if you need them.
Gunner
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