Hi, I am attempting to turn a flywheel from 1018 hot rolled steel. The finished dimensions are 4.25" diameter by .750" thick. I bought this grade of steel because it was half the price of cold rolled. I have never tried turning hot rolled before, and it has been a nightmare. It is chipping the tips on my inserts almost as fast as I can replace them. HSS seems to just wear down rapidly. The finish is terrible and very inconsistent. I have varied the feed rate and depth of cut to no avail. Is there something I am doing wrong or should I just bite the bullet and buy a blank of cold rolled? Thanks in advance, John.