The AMTG G4 is a project-engineered large-format gantry construction 3D printer designed for industrial-scale printing directly over prepared foundations. Its independent support structure, expanded working envelope, and coordinated material-delivery system are intended for demanding residential, commercial, institutional, and industrial applications.
Built for large on-site construction
The G4 uses a Cartesian portal architecture to move the print head across a nominal working envelope of approximately 26 × 26 × 12 m. The printer supports are independent from the foundation of the structure being printed, giving the customer’s project team greater flexibility when planning foundations, access, utilities, material handling, and the construction sequence.
Steel and aluminum-alloy structural components combine strength with reduced moving mass. A new controller configuration, updated electrical hardware, and automated preparation and delivery of printable material create a coordinated platform for professional operation.
Typical applications
- Single-family and multi-family housing
- Hotels, offices, retail, and mixed-use structures
- Schools, community buildings, and public facilities
- Warehouses, workshops, utility buildings, and tanks
- Project-engineered resilient construction applications
System advantages
- Large uninterrupted working area
- Up to 12 m nominal print height in the preliminary configuration
- Independent gantry supports not attached to the printed building foundation
- Cartesian motion for repeatable digital toolpaths
- Straight and curved wall geometry within one coordinated workflow
- Automated material preparation and delivery concept
Preliminary technical specifications
| System type | Large-format portal / gantry construction 3D printer |
| Nominal working envelope | Approximately 26 × 26 × 12 m |
| Nominal working area | Approximately 650 m² |
| Maximum print height | Up to 12 m |
| Maximum material output | Up to 0.8 m³/h, depending on material and print parameters |
| Primary structural materials | Steel and aluminum alloy |
| Coordinate system | Cartesian portal configuration |
| Material preparation and delivery | Automated mixing and feeding system included in the system concept |
| Control system | New controller configuration and updated hardware package |
| Foundation interface | Independent printer supports; not attached to the printed building foundation |
| Printable material families | Qualified cement-based and gypsum-based mixtures |
| Manufacturer warranty | 12 months |
| Training | Theoretical and practical operator training |
Complete equipment package
AMTG supplies the G4 as an integrated construction-printing system rather than a stand-alone motion platform. The printer, material preparation, material delivery, power, controls, training, and support are coordinated around the intended application.
- AMTG G4 large-format construction 3D printer
- Synchronized mixer and material pump
- Power generator for the supplied equipment package
- Material-delivery hoses and printer-head assembly
- Control cabinet, motion controller, operator workstation, and software
- Installation, commissioning, calibration, and operator training
- Technical documentation, consultations, and long-term support under the agreed terms
- Print-file checking, preparation, and processing assistance
- Access to the AMTG owner community and experience from completed customer projects
Digital construction workflow
- Assess the project concept, required print envelope, site limitations, utilities, and regulatory pathway.
- Review the approved geometry and prepare machine-ready toolpaths.
- Prepare foundations, independent printer supports, access, utilities, and the material-handling area.
- Assemble and align the gantry, commission controls, calibrate the system, and complete dry-run testing.
- Qualify the selected material and verify extrusion, layer geometry, adhesion, and dimensional accuracy.
- Print in accordance with the approved design, reinforcement plan, and quality-control procedure.
- Complete conventional reinforcement, infill, openings, MEP systems, roofing, finishes, and inspections as required.
Materials and project engineering
The G4 is designed as a flexible construction-printing platform rather than a closed proprietary-material system. Printable materials may include qualified cement-based and gypsum-based formulations. The selected material must be tested for pumpability, extrusion stability, early strength, layer stability, interlayer bonding, durability, and the environmental conditions of the project.
AMTG manufactures and supports the equipment but does not act as the builder, structural engineer, architect, material supplier, or contractor of record. Final structural design, reinforcement, materials, permits, site execution, safety, quality control, and code compliance remain the responsibility of the customer’s qualified professionals.
Configure the AMTG G4 for your project
Send the proposed structure, maximum dimensions, site conditions, target material, utilities, production objectives, and project schedule. AMTG will review the application and prepare the next technical and commercial steps.
Specifications are preliminary and describe a reference configuration. Final dimensions, output, utilities, included equipment, certifications, performance values, warranty, and supply scope must be confirmed in the official quotation, contract, and technical passport.