Hard milling

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=AQ8zFopI41I

Flame cut 4140 being hardmilled at 850 sfm, .005 ipt and .02 radial. Outer surface checked at 55Rc to 58Rc. This was part #7 of 140. See more about us at mou...

Iscar, seco, hardmilling, varimill
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