why should you not hit two hammers together?

Question

I’ve heard that saying countless times and no amount of googling gave me a satisfactory answer.

In: 8838

Answer 1

They’re very hard. Striking a hammer on a nail is ok because the mail is a soft metal. This is also the same reason you shouldn’t strike an anvil. When the softer metal is struck, it will deform before it breaks.

When you strike a hammer on a hammer, you risk cracking either hammer and sending chips of metal flying.