Protolabs is the world's fastest source for custom prototypes and low-volume production parts. Our quick-turn injection molding service manufactures real engineering-grade thermoplastic and liquid silicone rubber parts in as fast as 1 day. Injection molding is often used for prototyping and short-run manufacturing up to 10,000+ plastic parts and bridge tooling before moving to large-scale manufacturing. Along with plastic injection molding, our advanced liquid silicone rubber (LSR) molding processes produce quantities of 25 to 5,000+ parts. Learn more about injection molding at protolabs.com/injection-molding.