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A mould assembly for producing multiple castings in which a plurality of mould components are closely arranged together in an array and define a plurality of mould cavities. At the base of the array there is provided a regularly shaped space which communicates with each of the individual mould cavit

A mould assembly for producing multiple castings in which a plurality of mould components are closely arranged together in an array and define a plurality of mould cavities. At the base of the array there is provided a regularly shaped space which communicates with each of the individual mould cavities via a runner passage and thus molten metal admitted to the space fills each of the mould cavities simultaneously leading to uniform properties in all the castings. The individual mould components are preferably injected moulded in a ceramic material.

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A mold assembly for producing multiple castings comprising a plurality of individual elements each defining a part of a mold cavity; means holding a plurality of said elements in an array with the complementary cavity parts in registry to define a plurality of mold cavities, the upper and lower surf

A mold assembly for producing multiple castings comprising a plurality of individual elements each defining a part of a mold cavity; means holding a plurality of said elements in an array with the complementary cavity parts in registry to define a plurality of mold cavities, the upper and lower surfaces of said elements defining with said means two spaces at opposite ends of the array, said elements defining a runner passage from each mold cavity to both of said spaces and a central passageway interconnecting said spaces.