Just how do you strike a saw?

Horn Anvils

Singlejack or Lump Hammer

Horn anvils are expensive & hard to find. You can make a tooth-setting anvil from a lump hammer or singlejack hammer.

First grind the face smooth. Then mark a line 10 mm or so from one edge and grind a bevel. I find 65° works well. Keep the metal cool by frequent dunking in water.