Look at it this way. If you've ever turned fiberglas you know that HSS will not make even one pass with out losing the tip, or the entire cutting edge. Carbide will last the entire job and several more. There are tools that take the many different shapes of pre-made inserts, round, triangular, parting, you name it there is probably an insert made in that shape.
The opinion of 10,000 men is of no value if none of them know anything about the subject.
- Marcus Aurelius ---------------------------------------- ------------- [SIGPIC][/SIGPIC]