Dog

nounShop talkWelding

A small steel lug tacked to a part so a wedge or bolt can pull pieces into alignment during fit-up.

Short piece of plate, often notched, temporarily tack welded to one member so a wedge, bolt or bar can drive the adjoining piece into line. Shipyards and structural shops use dogs and wedges to close gaps and remove hi-lo before welding. Dogs are cut off afterward, not knocked off, and the spot is ground flush and inspected, because a torn-out tack can leave a notch or crack in the plate.

Heard on the job

Weld a couple of dogs on the deck plate and drive a wedge, it's still a quarter proud.

Also heard as

  • dogs
  • dogs and wedges
  • clip