American Center for Manufacturing and Innovation(ACMI), a U.S. organization focused on strengthening domestic manufacturing through investments in emerging industrial companies and infrastructure, has acquired anAMCM M 8Kmetal 3D printing system. ACMI reports that this installation represents the first deployment of the machine worldwide and expands access to large-format laser powder bed fusion (LPBF) manufacturing for its supply chain partners and customers.
The system was developed byAMCM, a company within theEOS Groupthat builds customized additive manufacturing machines based onEOSmetal 3D printing technology. AMCM M 8K introduces a large-format LPBF platform designed for aerospace and defense applications. Its build volume measures 800 × 800 × 1,200 mm, enabling production of large metal components within a single build. Eight 1.2 kWnLIGHTlasers manufactured in the United States operate simultaneously across the powder bed, supported by advanced optical systems and beam shaping technology intended to maintain consistent exposure across the build area.
Engineering of the machine extends design principles previously implemented in the company’sAMCM M 4Kplatform to a substantially larger architecture. According to the developer, the system can move up to four tons of metal powder along the Z-axis during operation while maintaining positional accuracy across the exposure field created by eight synchronized lasers. This configuration supports production of complex structures including rocket engines and missile components that require large build volumes and high geometric precision.
Scaling LPBF to meter-scale platforms introduces challenges related to gas flow stability and process control. Airflow must remain consistent across large build areas to remove process by-products and maintain stable melting conditions. AMCM addresses this constraint throughAirSword, a gas flow architecture designed to maintain uniform multi-layer airflow across the full build area during printing. According to the company, the system removes laser smoke interaction, protects optics and laser paths during long builds, and reduces maintenance requirements while increasing system uptime.
“The AirSword technology allows AMCM to retain the proven fixed-scanner approach, delivering unmatched speed and quality without the added complexity of moving optics,” said Georg Fey, Team Manager Application & Innovation at AMCM.
Control of laser exposure across large powder beds also requires coordination between multiple lasers operating simultaneously. AMCM M 8K integrates Dynamic Scan Fields, a capability implemented through theEOSPrintsoftware platform used to prepare LPBF builds. Dynamic Scan Fields allow scanning regions to adapt automatically during each layer, enabling lasers to work cooperatively rather than operating in rigid segments across the powder bed.
EOSPrint also supports multiple exposure strategies depending on manufacturing requirements. Controlled overlap configurations allow transparent layer-by-layer collaboration between lasers, while fixed segmentation can be used in multipart builds where repeatability and process control are required. Full-field overlap removes rigid quadrant boundaries and distributes exposure across unevenly populated build areas.
Thermal stability remains critical when processing materials that require precise heat management. The system incorporates a cooling architecture and thermal management approach designed to maintain consistent processing conditions during extended builds, including production using materials such as copper alloys, which are difficult to process due to high thermal conductivity.
ACMI acquired the platform as part of its broader effort to expand domestic manufacturing capability. The organization operates through several affiliated entities includingACMI Federal,ACMI Capital, andACMI Properties, which invest in industrial infrastructure, manufacturing technologies, and supply chain development within the United States.
“In the defense manufacturing sector, ACMI is lowering the barriers to access the latest manufacturing technologies for defense contractors and the broader subcomponent supply chain, helping to accelerate modernization and improve production readiness across the industry,” said John Burer, Founder and CEO ofACMI Group.
Source: 3D Printing Industry
