put the hammer down

bring down the hammer

To treat very harshly.

bring to the hammer

To put up for sale by auction.

hammer and tongs

In a manner indicating seriousness of intent and capability of harm.

hammer away

To continue discussing or trying to solve.

hammer home

To repeatedly or continually emphasize (an opinion or idea) until or so that a person or group of people understands it.

nail the hammer on the head

Nonstandard form of hit the nail on the head.

not to put too fine a point on it

Used to apologize for a possibly impolite statement one is making; to put it bluntly; to express it in plain terms.

put a band-aid on a bullet wound

To inadequately treat a serious situation.