The peen end of a ball peen hammer is primarily used for riveting and to expand or stretch metal.

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Multiple Choice

The peen end of a ball peen hammer is primarily used for riveting and to expand or stretch metal.

Explanation:
The ball end is designed for forming and shaping metal by peening—deforming it without removing material. In riveting, you drive the rivet and then strike the shank with the rounded face to upset and expand the metal around the rivet head, creating a tight, secure joint. The rounded shape spreads the force and minimizes gouging, which is ideal for shaping and stretching metal in a controlled way. This is why the peen end is used for riveting and for metal forming; it isn’t meant for cutting, smoothing, or driving nails, which require other tools.

The ball end is designed for forming and shaping metal by peening—deforming it without removing material. In riveting, you drive the rivet and then strike the shank with the rounded face to upset and expand the metal around the rivet head, creating a tight, secure joint. The rounded shape spreads the force and minimizes gouging, which is ideal for shaping and stretching metal in a controlled way. This is why the peen end is used for riveting and for metal forming; it isn’t meant for cutting, smoothing, or driving nails, which require other tools.

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