Cold Forming Sheet Metal With A Hammer
These are bent out alternately and mated with the edge to be joined.
Cold forming sheet metal with a hammer. Hammer forming is one of the oldest simplest and least expensive ways to shape sheet metal. Move the metal around to get a smooth bowl shape. This takes patience and can be meditative. The cold hammer forged marking chf is stamped into millions of rifle barrels around the world.
You want to put your metal over the dent and hammer it with the ball end of the ball peen hammer. Lots of little hits will make your piece of metal take shape. For this example we will hammer form some tank end caps.
Source : pinterest.com