In sand casting, the first step is the sand being compressed around a pattern in two halves. Which option best describes this step?

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Multiple Choice

In sand casting, the first step is the sand being compressed around a pattern in two halves. Which option best describes this step?

Explanation:
Forming the mold by packing sand around a pattern in two halves creates the cavity that will shape the final piece. The pattern is a replica of the part, and when the sand is compressed in two halves and then the pattern is removed, two mold halves come apart to expose a cavity. This mold is then closed and molten metal is poured in to form the casting. The other steps—pouring the metal, trimming the sprue and finishing, or melting the pattern—happen after this mold-formation stage.

Forming the mold by packing sand around a pattern in two halves creates the cavity that will shape the final piece. The pattern is a replica of the part, and when the sand is compressed in two halves and then the pattern is removed, two mold halves come apart to expose a cavity. This mold is then closed and molten metal is poured in to form the casting. The other steps—pouring the metal, trimming the sprue and finishing, or melting the pattern—happen after this mold-formation stage.

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