File:2014-03-29 16.41.11.jpg

What kind of cutter is this? Here is a trick l learned from an experienced machinist. The surplus store where I purchase tools did not have a cutting tool with the proper diameter for the flanges. The machinist said "you have to improvise with what you have", and suggested I use a corner milling bit with the correct diameter. Sure enough it works great! The final cuts of the tread and the shaping of the flange were done at 300 rpm. Photo by Daris A. Nevil, 2014.