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Illustration of stepwise bronze casting by the lost-wax method. Lost-wax casting – also called investment casting, precision casting, or cire perdue (French: [siʁ pɛʁdy]; borrowed from French) [1] – is the process by which a duplicate sculpture (often a metal, such as silver, gold, brass, or bronze) is cast from an original sculpture.
This alloy gave the gold-works a reddish hue within the final product and allowed further malleability post the casting process. Much of the gold and Tumbaga works of the Quimbaya are believed to have been cast with the lost wax technique, a form of casting that has been found throughout ancient civilisations as early as 4000 BCE. [2] [6]
Candle moulding machine in Indonesia circa 1920. Candle making was developed independently in a number of countries around the world. [1]Candles were primarily made from tallow and beeswax in Europe from the Roman period until the modern era, when spermaceti (from sperm whales) was used in the 18th and 19th centuries, [2] and purified animal fats and paraffin wax since the 19th century. [1]
As the name suggests, the lost-wax method is to use wax as a mold, and heat it to melt the wax mold and lose it, thereby casting bronze ware, making the model (the outer layer of the wax model is coated with mud), lost-wax (heating to make the wax flow out), pouring copper liquid to fill the cavity left by the wax model, etc.
The archaeology of Igbo-Ukwu is the study of an archaeological site located in a town of the same name: Igbo-Ukwu, an Igbo town in Anambra State in southeastern Nigeria.As a result of these findings, three excavation areas at Igbo-Ukwu were opened in 1959 and 1964 by Charles Thurstan Shaw: Igbo Richard, Igbo Isaiah, and Igbo Jonah.
Wax has been used since antiquity as a temporary, removable model in lost-wax casting of gold, silver and other materials. Wax with colorful pigments added has been used as a medium in encaustic painting , and is used today in the manufacture of crayons , china markers and colored pencils .
The team found Corinthian alabaster, Attic vases, and locally-made ritual jugs. They also uncovered treasure of a shinier kind: gold, silver, coral, and amber jewelry, amulets from the East, and ...
West Mexican smiths worked primarily in copper during the initial period, with some low-arsenic alloys, as well as occasional employment of silver and gold. Lost-wax cast bells were introduced from lower Central America and Colombia during this phase, along with several classes of cold-worked ornaments and hand tools, such as needles and tweezers.