Founded by father and son Jose and Giovanni, family-owned ProtoSpark LLC is a Brooklyn machine shop that turns ideas into working prototypes through CNC machining, 3D printing, and mechanical design. The shop serves both individual inventors and established companies, pairing hands-on manufacturing experience with fast turnaround and collaborative communication. ProtoSpark also offers beginner-focused CNC training for people entering modern fabrication.
Carroll Custom MachiningFamily-owned Carroll Custom Machining grew from owner George F. Jarrard’s nearly 50 years in machining and R&D. Established in Carroll County after his 2016 retirement, the company is known for working closely with inventors and engineers to turn challenging ideas into prototypes ready for testing or presentation.WESTMINSTER, MD
Bowes Manufacturing, LLCWith more than 35 years in machining and industrial prototyping, Bowes Manufacturing, LLC is a Rochester, New York shop known for helping engineers, product teams, and makers turn early concepts into workable parts. It supports projects from one-off prototypes through short-run production, offering practical feedback on manufacturability along the way.SOLON, OH
NK MachineOwner-operated for more than 15 years, NK Machine is a Hamilton shop known for taking machinery ideas from rough concept to working reality. Its 30,000-square-foot facility serves customers across the Tri-State area and beyond, with an engineer who understands how designs will be made on the shop floor. The company is particularly suited to customers who need a prototype or special machine developed into a finished build.HAMILTON, OH
Pronto ManufacturingPronto Manufacturing is a three-generation family-owned business founded in 1980 by tool-and-die maker Frank Silvestri. The Long Island company now works from a 10,000-square-foot facility, carrying its founder’s precision-minded approach into CNC machining and custom tooling for customers needing prototype or production work.RONKONKOMA, NY