Founded and led by engineer Max Braun, RapidFab Solutions brings a machinist’s practical perspective to engineering work for manufacturers, innovators, and hobbyists. Braun began in a local machine shop as a high school intern before earning a mechanical engineering degree from Clemson University, and he now applies that hands-on background to reverse-engineering obsolete parts and developing prototypes for clients across varied industries.
Hopkins Machine CompanySince beginning as a teenage machinist in 1963, Charles Hopkins has built Hopkins Machine Company into a Middletown Valley prototype shop handling everything from historic engine reconstruction to precision CNC machining. The small, owner-operated company works from sketches or 3D models, reproduces obsolete parts, and takes on short-run projects rather than production volumes. Hopkins’s background includes Army machinist training and machining work in aerospace, medical, and automotive reconstruction.MIDDLETOWN, MD
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
Fabricating SolutionsFounded in 2004 by Dewey Lockwood, Twinsburg’s Fabricating Solutions began as an applications-engineering and design-for-manufacturability firm and has grown into a job shop serving both prototyping and production needs. Its in-house equipment supports projects from laser-cut blanks to formed, welded, and assembled components, while its consulting work helps manufacturers re-engineer products and improve fabrication processes. Lockwood’s seven years with Trumpf anchor the company’s emphasis on applying manufacturing know-how to practical production challenges.TWINSBURG, OH
ProtoSpark LLCFounded 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.BROOKLYN, NY