From Prototype Tool to Production Backbone
Beehive Industries’ record order for EOS M4 ONYX printers is the clearest sign yet that metal 3D printing in defense has moved from experimental prototyping to a core method for serial production of complex drone engines and other propulsion systems at meaningful industrial scale. Earlier this year, Beehive received a USD 29.7 million (approx. RM137 million) contract to produce its Frenzy 6 and Frenzy 8 engines for the US Air Force, claiming its metal additive process is both faster and 60 percent cheaper than conventional engine manufacturing for uncrewed systems. To meet that demand, the company has committed more than USD 50 million (approx. RM231 million) to expand its EOS fleet, in what EOS describes as the largest single publicly disclosed order in its history. The move ties rising drone engine manufacturing needs directly to additive manufacturing production scale.
Inside Beehive’s $50M Bet on EOS M4 ONYX
Beehive’s purchase covers 30 EOS M4 ONYX metal systems to be delivered within 12 months to its facilities in Knoxville, Tennessee, and Centennial, Colorado, lifting its total EOS machine count to 50. The EOS M4 ONYX printer is the company’s newest six-laser metal AM platform, introduced at Formnext and shipping since early this year. Beehive chose the system for throughput, process stability, automation, and part quality, supported by an expanded build volume, advanced process monitoring, and the RFS Pro powder filtration system. The firm will also use EOS software for real-time monitoring, production data tracking, and quality management to maintain repeatability and traceability across its operations. According to EOS CEO Marie Niehaus-Langer, “Beehive Industries’ unprecedented investment demonstrates how additive manufacturing has become a foundational production technology for the next generation of advanced propulsion systems.”
Meeting Swarm-Class Drone Demand at Scale
The investment is tightly linked to rising demand for Beehive’s Frenzy 8 engine, a jet engine designed for swarm-class drones and other uncrewed aerial systems that must be low-cost and produced in high volumes. Program milestones include high-altitude testing, flight readiness validation, and the USD 29.7 million (approx. RM137 million) US Air Force contract covering vehicle integration, flight testing, and propulsion platform qualification. Beehive is also developing the Rampart turbofan platform targeting applications above 1,000 lbf of thrust, signaling a roadmap beyond small drones into larger propulsion classes. Darius Ehteshami, Beehive’s COO and CFO, said the company is facing “unprecedented demand for our Frenzy 8 engines driven by major defense programs and the urgent need for affordable, high-rate production of uncrewed systems,” framing metal 3D printing defense programs as long-term production, not short-run experiments.
Supply Chain Reset: Domestic, Digital, and Additive-First
Beehive’s EOS M4 ONYX order illustrates how defense buyers are reshaping supply chains around digital, additive-first production models. By concentrating drone engine manufacturing on a fleet of standardized metal AM systems, Beehive can respond faster to changing engine designs and production volumes than traditional cast-and-machined supply chains. Metal 3D printing reduces tooling reliance and enables more localized, flexible production cells within existing facilities in Colorado and Tennessee. The American Center for Manufacturing Innovation, one of the first M4 ONYX customers, has already validated the platform for military aerospace work, while service bureau Incodema3D has committed to additional units to serve defense programs. With the US military expecting years of stockpile replenishment after recent conflicts, demand is favoring suppliers that can industrialize additive manufacturing production scale while keeping propulsion solutions domestic and more easily auditable.
What This Signals for Metal AM in Defense Aerospace
Beehive’s EOS deal reinforces a broader pattern: metal AM suppliers that deliver reliable machines, service, and data-driven quality are now winning large, multi-year defense production roles. EOS, a long-standing pure-play in metal AM, is seeing companies such as Beehive, Incodema3D, and Ursa Major expand around its platforms, showing how consistent process stability can underpin serious capital commitments. For defense aerospace, this shift means new propulsion systems can be conceived with metal 3D printing defense requirements in mind from the outset, rather than adapted later from cast or forged designs. The Frenzy engine program shows how additive-ready engines can be qualified and ramped on a standardized printer fleet, shortening the path from concept to fielded hardware. As uncrewed systems proliferate, similar high-volume, additive-centered manufacturing cells are likely to become standard across propulsion and other mission-critical components.
