Florida-based construction 3D printer manufacturer AMTG has revealed that three of its G2 gantry systems were used together to produce the printed wall system for the Mella shopping center. The commercial construction project was developed by an AMTG customer, which used the three synchronized printers in a coordinated workflow.
Long wall sections, openings and architectural transitions were formed directly during printing, according to the company. Deploying several printers allowed the project team to distribute work across the building footprint rather than concentrating production on a single machine.
AMTG describes the G2 as a high-reach gantry construction 3D printer designed for large building projects. Its modular Cartesian structure can be configured according to building geometry and site requirements. For the Mella project, the three systems were used to form long wall sections, openings and architectural transitions during printing. The company has not disclosed how the printers were synchronized, including whether they operated simultaneously under centralized control or followed coordinated production schedules.
AMTG's role in the project was limited to supplying the printing systems together with operator training and equipment-operation certification. Structural design, materials and construction remained the responsibility of the customer's qualified professionals.
Beyond the G2, AMTG offers three construction 3D printer families. The R-Series covers road-mobile and tracked robotic systems intended for rapid deployment, while the G-Series covers gantry printers for on-site construction. The F-Series focuses on factory-controlled production of prefabricated components.
Construction printing moves into commercial projects
Construction companies are increasingly integrating 3D printing into commercial building work. In the United States, Alquist announced an expansion of its construction 3D printing operations through a partnership involving Walmart, construction firm FMGI and equipment supplier Hugg & Hall. The initiative covers more than a dozen commercial projects and includes equipment deployment, operator training and technical support, reflecting a model in which contractors fold 3D printing into their existing construction operations.
A similar approach has emerged in Germany, where construction group Matthäi established a dedicated 3D printing division after completing a two-storey office building. Using a COBOD BOD2 printer, the company produced the building's walls in approximately 105 hours, while foundations, floors and roofing were completed using conventional methods.
Other projects are exploring ways to increase production capacity and expand the areas covered by automated equipment. In France, the ViliaSprint² development used a COBOD BOD2 printer to construct a three-storey, 12-apartment residential building. Its walls and load-bearing structure were printed in 34 days, against an initial estimate of 50 days, and the project partners are planning a larger development involving two printers operating simultaneously.
In Australia, construction technology company Luyten 3D introduced its ASCEND A27, a tower crane-mounted concrete 3D printer with a working radius of up to 45 meters. Unlike conventional gantry systems, the ASCEND is designed to cover larger construction footprints from a single installation point.
Taken together, the Mella project illustrates one route to scaling construction 3D printing by deploying multiple gantry systems rather than depending on a single machine.