A mold is a special injection molding tool. Custom molded component manufacturers design and fabricate the mold specifically for the part they'll produce. When the production run for a part is finished, specialists replace the mold with a new mold for the next part they need to manufacture. Several types of molds exist for injection molding.
The mold determines the part's shape and size. It's also the special tooling in injection molding. When making large, complex parts, a mold may cost hundreds of thousands of dollars. When it comes to smaller parts, manufacturers can create molds with multiple cavities, adding to its cost. Incidentally, injection molding is most economical for large production quantities.
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