Which material is commonly used in the hollow casting method?

The hollow casting method frequently employs bronze due to its favorable properties for creating durable and finely detailed sculptures or objects. Bronze, an alloy typically made from copper and tin, has a low melting point compared to other metals, making it easier to work with during the casting process. When using hollow casting, molds are created in which the molten bronze is poured to form the desired shape. This technique allows for intricate details and can produce lightweight but strong items because the hollow structure minimizes the amount of material used while maintaining structural integrity.

The other materials listed can be used in various forms of art but are not standard in the hollow casting method. For instance, glass can be molded but is not typically cast hollow in the same way as metal. Wood, while versatile for many types of sculpture, is generally not cast in the hollow format. Clay is often used in pottery and sculpture but is not suited for the hollow casting technique that specifically involves molten metal.