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Concept
Repoussé and chasing
Summary
Repoussé (ʁəpuse) or repoussage (ʁəpusaʒ) is a metalworking technique in which a malleable metal is shaped by hammering from the reverse side to create a design in low relief. Chasing (French: ciselure) or embossing is a similar technique in which the piece is hammered on the front side, sinking the metal. The two techniques are often used in conjunction.
Many metals can be used for chasing and repoussé work, including gold, silver, copper, and alloys such as steel, bronze, and pewter.
These techniques are very ancient and have been extensively used all over the world, as they require only the simplest tools and materials, and yet allow great diversity of expression. They are also relatively economical, since there is no loss or waste of metal, which mostly retains its original size and thickness. Toolmarks are often intentionally left visible in the result.
A few among many famous examples of repoussé and chasing are the prehistoric Gundestrup cauldron, the mask on the mummy of Tutankhamun, the body armours of the Bronze Age, the copper ornaments made by the Native Americans in the Southeastern United States, and the Statue of Liberty in New York City.
The word repoussé is French and means "pushed up", ultimately from Latin pulsare, which means "to push". Repoussage is the noun to refer to the technique, with repoussé being an adjective referring to a piece to which the technique has been applied (e.g. "repoussé work", "repoussé piece").
Chasing comes from the French word, chasser meaning to drive out, or to chase around which is what the artists are doing as they "chase" the forms on their metal in order to create their final design.
The techniques of repoussé and chasing date from Antiquity and have been used widely with gold and silver for fine detailed work and with copper, tin, and bronze for larger sculptures.
During the 3rd millennium BC, in the Middle East, a variety of semi-mass production methods were introduced to avoid repetitive free-hand work.
Official source
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