JPH
I actually do agree with a lot of what you say / by the way its refreshing to hear from someone that seems to know what they are talking about / I guess I should have been more clear but I was refering to using banding material , cable , chains etc where at best its a guess as to what the contents of the material really is.
modern saw blades are bimetal with hard teeth and soft backing but this is usually more for cost containment.
I agree that you would have to know what you are doing and take into consideration all of the constantly changing varibles / warm anvil,cold anvil,shop temperature ,heat of the fire to a closer control than most smiths today would admit to knowing exactly at any given time and all of this is before any given properties of the component materials are known / not assumed or guessed at / power hammer / hand hammer and the list of varibles could be almost endless.
I really expect to to get hammerd on this one but I really am curious as to how others do it