What’s a ballpoint hammer?

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A ballpoint hammer has two ends, one shaped like a ball and the other cylindrical, used for shaping and striking metal. Shot peening hammers are used for metal fabrication and work hardening. Peen hammers come in different shapes and sizes and are used to form metal objects and make knife and sword blades.

A ballpoint hammer has two ends: one shaped like a ball and the other more cylindrical. It can have a metal, fiberglass or wooden handle. A ball hammer is a variety of shot peening hammers used for both shaping and striking metal, including punches and chisels, in metal fabrication.
The crowned or rounded edge of the ballpoint hammer works the metal evenly without marking it. The ball portion can straighten, soften and expand the metal into the desired shape. The other, straighter end of the hammer can be used to strike punches and chisels. A chisel is a steel cutter that cuts through sheet metal, rivets, bolts, and even plaster. Punches mark metal or wood for hole placement, and a peen hammer is used to strike the punch when a power punch is not used.

Shot peening is not used in most metal fabrication operations today, but was the original use of shot peening hammers. Shot peening involves striking welded or riveted metal to make it as pliable as the rest of the metal in an object. The result of shot peening is a work hardening property added to the metal.

Peening hammers include the cross peen and straight peen as well as the ball peen hammer. The straight peg hammer has a wedge-shaped rather than a ball-shaped head. The head is upright in a straight peen hammer, while the crosspeen hammer has the wedge-shaped head angled sideways. Peen hammers, spelled pein or pien in the United Kingdom (UK), have a steel head that has been hardened to prevent chipping when struck.

Penhammers are also called engineer’s hammers or machinist’s hammers and come in many different weights, often from 2 oz (56.7 g) to 48 oz (1.3608 kg). This hammer can be used to form the overall shape of the metal object, and can be used to make knife and sword blades. The newly formed metal blade can first be roughly filed down before being properly shaped with a pein hammer.

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