Facts : 1 Common bronze alloys have the unusual and desirable property of expanding slightly just before they set, thus filling the finest details of a mold Facts : 2 Their strength and lack of brittleness (ductility) is an advantage when figures in action are to be created, especially when compared to various ceramic or stone materials (see marble sculpture for several examples) Facts : 3 Casting is a group of manufacturing processes by which a liquid material (bronze, copper, glass, aluminum, iron) is (usually) poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify Facts : 4 The solid casting is then ejected or broken out to complete the process, although a final stage of cold work may follow on the finished cast Facts : 5 Casting may be used to form hot liquid metals or various materials that cold set after mixing of components (such as epoxies, concrete, plaster and clay) Facts : 6 Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods Facts : 7 Specific techniques include lost-wax casting, plaster mold casting and sand casting
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