File:2014-03-29 16.33.08.jpg

This is the final cut across the tread, taking the last 5 mils off. This is at an angle of 2-5/6 degrees per IBLS spec. The final tread diameter is 4.000 inch its widest point next to the flange. Most cuts were performed at 1600 rpm. Slowed to 300 rpm on final cuts. Photo by Daris A. Nevil, 2014.