A mockup will be made with the mold to make sure it works, and then the plastics company can start a production run, limiting the run to the number of components necessary. Usually, custom injection molding gets cheaper with large runs, as the cost for producing the mold and formulating the plastic is the same with one part or one million parts.
In the process of manufacturing, the term injection molding prototype can refer to two distinct things. An injection molding prototype can be a custom injection molding part. The term can also refer to the original part used to create an injection mold from which duplicate parts may be cast.
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