Prototypes that are visually and functionally representative of the final manufactured solution can be produced to provide final confirmation of the design prior to committing to mass production. Final material properties are mimicked as closely as possible within the limitations of lead-time, prototyping materials and processes.

Such prototypes can often also be used for certification pre-testing and user trials well in advance of full-scale production. Extensive testing and evaluation of this nature will help to ensure that the design is proven and frozen before major capital investments are made in production tooling and equipment.