Fuller (metalworking)

In metalworking, a fuller is a tool used to form metal when hot.

Upper fullers furthermore come in "straight" or "cross" varieties, depending on the orientation of the handle relative to the face.

The rounded nose of the fuller spreads the metal more efficiently than the flat face of the hammer.

The process leaves ridges in the stock, which may then be flattened out later with the hammer or other tools.

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