ADDMAN brings together the strengths, expertise, and innovations of several respected manufacturing organizations—now united under one name and one mission. Formed to help American companies accelerate production, ADDMAN provides end-to-end, innovation-driven manufacturing solutions across every stage of the product lifecycle and every level of volume.
Metal Additive
Castheon was founded in 2016 with a specialized focus on the additive manufacturing of refractory metals for hypersonic, aerospace, and defense applications. From the beginning, the team became known for rapid and robust AM process development, advanced metallurgy, and the ability to produce mission-critical components with exceptional strength, lighter weight, and accelerated lead times.
Over the years, Castheon established a reputation for pushing the boundaries of Laser Powder Bed Fusion (LPBF), particularly in high-temperature alloys where isotropic microstructures and precise material behavior are essential. This deep technical expertise positioned Castheon as a trusted partner for programs requiring extreme performance and exceptionally high quality.
In 2021, Castheon was acquired by ADDMAN, bringing its specialized knowledge, processes, and talent into a broader, vertically integrated manufacturing organization. Under the leadership of Dr. Youping Gao—Castheon’s founder and now Chief Scientist at ADDMAN—the team’s pioneering work in refractory metal additive manufacturing became the foundation for ADDMAN’s advanced metal capabilities.
Today, Castheon’s innovations live on within ADDMAN’s unified engineering and production ecosystem, continuing to inform and elevate the company’s work in hypersonics, propulsion, and next-generation defense technologies.
Metal Additive
Keselowski Advanced Manufacturing (KAM) was founded in 2018 by NASCAR driver Brad Keselowski, who brought his passion for engineering precision and high-performance customization from the racetrack into the world of advanced manufacturing. What began as an effort to modernize racecar component development quickly evolved into a state-of-the-art metal additive manufacturing operation with a strong technical foundation and a commitment to excellence.
Located in Statesville, North Carolina, KAM grew into a 70,000 sq. ft. facility equipped with industry-leading metal additive technologies supported by an in-house CNC machining operation for critical post-processing. The organization became known for its process-driven methodology, disciplined quality systems, and deep expertise with high-grade AM materials—serving customers across aerospace, defense, motorsports, and other demanding sectors.
In 2024, KAM was acquired by ADDMAN, expanding the company’s metal additive footprint and strengthening its capacity for scalable, production-ready AM solutions. KAM’s experience in precision engineering, rigorous qualification workflows, and advanced process control now contributes directly to ADDMAN’s integrated metals strategy.
Today, the innovations and practices developed at KAM continue to advance ADDMAN’s mission, elevating our capabilities in high-performance additive manufacturing across the industries we serve.
Polymer 3D Printing
Founded in 2003, Dinsmore established itself as a trusted partner in the additive manufacturing industry, recognized for helping companies accelerate product development and reduce time-to-market through advanced polymer 3D printing. With a strong emphasis on rapid prototyping and early-stage production, Dinsmore became known for delivering high-quality parts across a wide range of industries and applications.
Over two decades, the company built deep expertise in polymer additive technologies, including SLA, DLS, FDM, MJF, and PolyJet. This breadth of capability allowed Dinsmore to support customers from concept through validation, offering quick-turn solutions that enabled faster innovation cycles and streamlined product launch timelines.
In 2023, Dinsmore was acquired by ADDMAN, bringing its polymer additive strengths into a unified, vertically integrated manufacturing organization. As part of ADDMAN, Dinsmore’s long-standing focus on prototyping and low-rate initial production now plays a central role in the company’s broader additive strategy, helping customers bridge the gap between design and scalable manufacturing.
Today, the expertise developed at Dinsmore continues to enhance ADDMAN’s ability to deliver agile, innovative, and production-ready polymer additive solutions.
Injection Molding
HARBEC has been a respected name in advanced manufacturing since its founding in 1977, known for delivering high-precision solutions for the defense, medical, and industrial sectors. Over decades of operation, the company developed deep expertise in injection molding, precision machining, metal additive manufacturing, and in-house tool and die making—building a reputation for quality, reliability, and technical excellence.
A defining element of HARBEC’s identity has been its early and enduring commitment to sustainability. Operating as a carbon-neutral facility long before environmental responsibility became an industry-wide priority, HARBEC established a strong model for energy-efficient and environmentally conscious production practices. This approach, often referred to as “The HARBEC Way,” emphasized meeting customer needs today while safeguarding the resources and quality standards required for future generations.
HARBEC’s injection molding operations became especially well regarded for their strength, durability, and high-volume production capability, making the organization a trusted partner for customers with demanding performance and throughput requirements. Its complementary metal additive and CNC machining services expanded its ability to serve customers with complex, multi-disciplinary manufacturing needs.
In 2024, HARBEC was acquired by ADDMAN, bringing its sustainable manufacturing philosophy and decades of technical experience into ADDMAN’s vertically integrated ecosystem. Today, HARBEC’s legacy informs ADDMAN’s broader commitment to responsible production, high-performance manufacturing, and end-to-end capability for advanced thermoplastic, metal, and precision-machined components.
CNC Machining
ADDMAN Precision is a dynamic CNC manufacturing powerhouse formed by the merger of Domaille Engineering, Stanley Engineering, and Tech Manufacturing. By combining the collective expertise and resources of these industry leaders, we have created a comprehensive solution to meet all your precision machining needs. Our state-of-the-art machinery, including 3-7-axis CNC turning centers, wire EDM systems, and a full range of processing and finishing capabilities, ensures that we deliver unmatched quality standards. With a rich heritage in precision machining spanning over 50 years, ADDMAN Precision has the knowledge and experience to cater to a wide variety of industries. Our technical specialty lies in CNC machining of exotic materials, as well as cold plates and manifolds.