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Nov 132012

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Hey guys, I just recently used the knurling tool on the lathe at the Invention Studio, and I wanted to put what I learned here so that it could be found again. The theory is that you want the displacing teeth to line up when they go around, so you should calculate the diameter and face it so that is very close. Use this site as a guide: http://www.proshoppublishing.com/articles_knurling.html I found it to be very helpful. It turns out that to get a pretty good knurl, face your diameter to .010″ wider than a multiple of .019″, and hand test it. If it looks good, use a low speed rotation, and a high (I suppose) speed feed rate to get a consistent knurl all the way up the part. I used a rotation speed of 115. This Youtube video suggests 150 rpm, and a feed rate of .014″/rev. http://www.youtube.com/watch?v=dTmv_kYimrI

Happy knurling!


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