From Prototypes to Production: Metal AM Enters a New Phase
Metal 3D printer expansion for aerospace and defense refers to equipment makers and manufacturers scaling laser powder bed fusion and other metal additive technologies, alongside larger facilities, so they can shift from low-volume prototyping to producing mission-critical hardware at industrial rates. A few years ago, metal additive manufacturing in these sectors was still dominated by research parts, test coupons, and limited pilot runs. Now, growing demand for drones, missile systems, propulsion components, and lightweight structures is pushing suppliers to lock in capacity and regional manufacturing hubs before competitors do. The focus is no longer only on part performance; it is on repeatability, throughput, and supply chain resilience. This new phase is defined by vertically integrated printer platforms, factory-scale deployments of standardized systems, and long-term defense additive manufacturing contracts that reward dependable, high-volume output.
Divergent’s Long Beach Bet: 64 Monolith One Printers for Defense Scale
Divergent Technologies’ Long Beach expansion is one of the clearest signals that metal AM is moving into production at scale. The company’s second factory, a 430,000 sq.ft. site in Long Beach, will bring 64 Monolith One metal 3D printers online over the next two years, on top of six already running at its Torrance headquarters. The Monolith One is a laser powder bed fusion system with 12 individual 2kW lasers, 24kW total, and a 700 x 700 x 835 mm build volume, built in-house as part of the Divergent Adaptive Production System. According to Divergent, the two facilities together are expected to deliver an eightfold increase in annual production output across defense and commercial programs, including tens of thousands of munition airframes and hundreds of thousands of critical piece parts per year. For defense customers, that output transforms metal AM from a niche capability into a strategic manufacturing backbone.
EOS and Beehive Show How Standard Platforms Enable Aerospace Scaling
While Divergent builds proprietary equipment, EOS is scaling through standardized commercial platforms. Beehive Industries has ordered 30 EOS M4 ONYX systems, to be delivered over 12 months, bringing its installed base of EOS metal systems to 50 across facilities in Knoxville and Centennial. The investment is driven by demand for Frenzy 8 engines, designed for swarm-class drones and other uncrewed aerial vehicles, where high-rate production and repeatable quality are essential. This move shows how metal additive manufacturing is becoming a core part of aerospace manufacturing scaling. Beehive is betting that a consistent fleet of EOS printers will make it easier to qualify processes, distribute work between sites, and respond quickly to new defense orders. In parallel with Divergent’s vertically integrated LPBF approach, EOS-backed deployments demonstrate that production-scale metal AM can also grow through large, shared platforms installed at specialist suppliers.
Consolidation, Partnerships and the Push to Lock In Defense Work
Across the sector, equipment makers and their customers are consolidating capacity and forming targeted partnerships to capture long-term defense additive manufacturing contracts. Divergent is positioning itself as a fully domestic, software-defined production hub, with its Long Beach factory expected to support about 1,000 direct jobs and annual output such as 30,000+ missile airframes and 60,000+ warhead casings. EOS, through programs like Beehive’s engine production, is embedding its machines directly into defense propulsion lines. Other vendors, including Meltio, are also announcing new metal 3D printers and alliances aimed at aerospace and defense applications, from flight-ready structures to complex propulsion parts. The pattern is clear: instead of scattering small numbers of machines across many sites, companies are clustering large fleets in regional hubs, tightening supply chains, and integrating design-to-production workflows to secure share in a rapidly maturing metal AM market.
