A mold with more than one cavity cut into it to make multiple parts of the same material in one cycle is called a family mold. Typically, each of these cavities forms a different part number, which is ideal for prototype molds because of the fast molding cycles.

The family mold is a multi-cavity mold where each cavity creates different parts of the same product. The parts produced by each cavity may also be unrelated, belonging to the same product line or to the same project. Family Molds are great for manufacturing parts that are assembled together or maximizing the number of parts produced per operation.