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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. Intricate works can be achieved by this method.
Similar metal artifact types are found in West Mexico and the two regions: copper rings, needles, and tweezers being fabricated in the same ways as in Ecuador and also found in similar archaeological contexts. A multitude of bells were also found, but in this case they were cast using the same lost-wax casting method as seen in Colombia. [40]
The fragile wax patterns must withstand forces encountered during the mould making. Much of the wax used in investment casting can be reclaimed and reused. [2] Lost-foam casting is a modern form of investment casting that eliminates certain steps in the process.
A casting defect is an undesired irregularity in a metal casting process. Some defects can be tolerated while others can be repaired, otherwise they must be eliminated. They are broken down into five main categories: gas porosity, shrinkage defects, mould material defects, pouring metal defects, and metallurgical defects.
Passing from the core through the wax and projecting beyond are metal rods. The modelling being completed, called lost-wax casting, the outer covering which will form the mould has to be applied; this is a liquid formed of clay and plaster sufficiently thin to find its way into every detail of the wax model. Further coatings of liquid are ...
A Đông Sơn drum in Guimet Museum, Paris. The earliest written records describing the drum appeared in the Shi Ben, a Chinese book dated from the 3rd century BC.The Hou Hanshu, a late Han dynasty book dated to the 5th century AD, describes how the Han dynasty general Ma Yuan collected bronze drums from northern Vietnam to melt down and recast into bronze horses.
Dancing Girl is a prehistoric bronze sculpture made in lost-wax casting about c. 2300 –1751 BC in the Indus Valley civilisation city of Mohenjo-daro (in modern-day Pakistan), [1] which was one of the earliest cities. The statue is 10.5 centimetres (4.1 in) tall, and depicts a nude young woman or girl with stylized ornaments, standing in a ...
See lost-wax casting, which article has a sculptural inclination, though the principles are the same for jewelry casting. The cast pieces will likely need a variety of work done to them, including filing to remove the skin left from casting and prepare for polishing, straightening parts, rounding and sizing rings, and assembling many various ...