[nflknives]

I have had a request from a coworker to build a bowie knife out of his dads circular sawmill blade from the early 1980's. My problem is what kind of steel would this be and how to heat treat and temper it. Would is most likely be 01 tool steel?? There are no numbers or stamps on the blade. It is approx 3/8 inch thick without putting a tape measure on it.