New tooling comes and goes but I don't remember anything as revolutionary as the carbide insert style parting tools. I was a former user of the HSS blade for parting, when I used it I developed what I call the HSS parting tool grimace, a squinting, puckered up facial expression in anticipation of what inevitably is bound to happen. Then my brother, who worked 2nd shift in a shop doing cut-off on 2 1/2" steel bars with an Iscar carbide insert style parting system, said as an experiment, he increased the feed on the lathe one step at a time to see where it would fail. He was amazed how fast he was feeding with still perfect results. Finally it broke either the insert or the blade, I forget which. He insisted I buy this type, which I did and never looked back. If anyone is still using the HSS blade for parting do yourself a big favor and give the insert blade a try, possibly the best tooling advance I have ever seen. If you are confidently using a HSS blade with good results, you are to be admired as an elite machinist! Thoughts?