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Wire sculpture is the creation of sculpture out of wire. The use of metal wire in jewelry dates back to the 2nd Dynasty in Egypt and to the Bronze and Iron Ages in Europe. [ 1 ] In the 20th century, the works of Alexander Calder , Ruth Asawa , and other modern practitioners developed the medium of wire sculpture as an art form.
Expensive copper wire was used only for selected trees that had real potential. [ 33 ] [ 34 ] In the 1920s and 1930s, toolsmith Masakuni I (1880–1950) helped design and produce the first steel tools specifically made for the developing requirements of bonsai styling. [ 35 ]
Electrum is a naturally occurring alloy of gold and silver, [1] [2] with trace amounts of copper and other metals. Its color ranges from pale to bright yellow, depending on the proportions of gold and silver. It has been produced artificially and is also known as "green gold". [3]
The black patina is a mixture of zinc oxide and copper(II) oxide (Cu 2 O). It is the copper oxide that gives the patina its black color (zinc oxide is white). The ammonium chloride that is applied to the bidriware selectively dissolves the zinc on the surface of the brass, leaving a copper-rich surface that is oxidized by the potassium nitrate. [7]
The first task in the lost wax hollow casting process consists of developing a clay core which is roughly the shape of the final cast image. Next, the clay core is covered by a layer of wax composed of pure beeswax, resin from the tree Damara orientalis (more properly Agathis dammara), and nut oil. The wax is then shaped and carved in all its ...
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