Mass production typically requires dedicated molds. Molds improve production efficiency, dimensional consistency, and unit cost competitiveness, but they also incur upfront mold costs and development time.

If the design is not yet finalized, the shape, assembly, and basic functions can be verified through machining, plastic samples, or metal 3D printing. Once the design is stable, the formal mold can be developed. This approach is generally more efficient than repeatedly modifying the mold after its creation.