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Shrinking

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Shrinking, while similar to upsetting, is essentially the opposite process as drawing. As the edge of a flat piece is curved such as in the making of a bowl shape, the edge will become wavy as the material bunches up in a shorter radius. At this point the wavy portion is heated and the waves are gently pounded flat to conform to the desired shape. If you were to compare the edge of the new shape to the original piece, you would discover that the material is thicker than before. This is due to the excess material that formed the waves being pushed into a uniform edge that has a smaller radius than before.


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