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. Developed by an AMTG customer, the commercial project relied on three synchronized G2 printers working in a coordinated workflow, with long wall sections, openings and architectural transitions formed directly during printing.
According to AMTG, spreading the work across several machines let the project team distribute production over the building footprint instead of depending on a single printer. AMTG describes the G2 as a high-reach gantry construction 3D printer built for large building projects, with a modular Cartesian structure that can be configured to suit building geometry and site requirements. The company has not disclosed how the three printers were synchronized, including whether they ran simultaneously under centralized control or followed coordinated production schedules.
Scope of AMTG's involvement
AMTG's role was limited to supplying the printing systems, 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 of road-mobile and tracked robotic systems for rapid deployment, the G-Series of gantry printers for on-site construction, and the F-Series focused on factory-controlled production of prefabricated components.
Construction 3D printing in commercial projects
The Mella work reflects a broader trend of construction companies integrating 3D printing into commercial building projects. 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, illustrating a model in which contractors fold 3D printing into their existing operations.
A comparable 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 finished with conventional methods.
Scaling capacity and reach
Other projects are exploring ways to raise production capacity and extend the area covered by automated equipment. In France, the ViliaSprint² development used a COBOD BOD2 printer to build a three-storey, 12-apartment residential building, printing its walls and load-bearing structure in 34 days against an initial estimate of 50 days. The project partners are planning a larger development that would involve two printers operating simultaneously.
In Australia, construction technology company Luyten 3D introduced the 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.