Persuader

nounShop talkMachine Shop

Shop name for a hammer, usually a big one, used to convince a stuck part to move.

A tongue-in-cheek name for whatever striking tool gets a press fit, seized pin or stubborn bearing moving: a dead blow, sledge, brass bar or chunk of steel. Reaching for the persuader is the step after gentler methods fail, and the size of hammer chosen says a lot about the user's patience. Brass and dead blow persuaders are chosen when the part must survive.

Heard on the job

Pin's not moving, hand me the persuader, the brass one, I don't want to mushroom the end.

Also heard as

  • convincer
  • big hammer