My saw setting hammer has blunt square flat ends. These were used to set teeth in saws made by hand. My grandfather made his living all his life by working for himself making saws by hand. These two pictures illustrate one of the setting hammers, which I still have. Clearly my family was brought up on the money made by making all kinds of handsaws by hand.
This setting process consists of hitting each alternate tooth of the saw with equal force and then turning the saw over and repeating the process by hitting the other alternate teeth.
I doubt if there are many persons left who can still do that fast enough to make a living.
My website, www.tyzack.net. illustrates the environment a little more.