Hollow casting

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Hollow casting is a casting process in which molten liquid metal is poured into a two part mold, and then poured out again to leave a hollow shell. The method was developed by William Britain in 1893 for the production of lead toy soldiers. It uses much less metal than solid casting, and results in a lighter and less expensive product. Hollow cast figures generally have a small hole where the excess molten metal was poured out.

A similar technique is used to make hollow chocolate figures for Easter and Christmas.

Hollow casting is also used extensively for vitreous china products, such as sinks, urinals, and toilets.