In aerospace, robotic Wire Arc Additive Manufacturing (WAAM) is used to produce medium to extra-large near-net-shape structural parts, custom tooling, and space hardware using certified metal alloys. By combining industrial robotics with arc deposition, WAAM delivers meter-scale metal components tailored for rigorous space and ground support applications.
Aerospace engineering relies on balancing structural integrity with material efficiency. Conventional manufacturing often struggles to deliver massive components without excessive material waste or prolonged lead times. MX3D addresses these production bottlenecks through three core value propositions tailored for the aerospace and space sectors:
Near-net-shape large parts: Producing components that scale to several meters in size, drastically reducing the volume of raw material required.
Short lead times: Bypassing traditional forging and casting delays to deliver critical structures and ground support equipment in weeks rather than months.
Certified metallurgy: Utilizing rigorously tested industrial alloys deposited under controlled conditions to meet exacting industry standards.
Learn more about our capabilities in large-scale metal 3D printing .
Why WAAM for Aerospace
Evaluating additive manufacturing for aerospace requires aligning the right technology with the correct structural scale. Traditional powder-bed fusion systems are well-suited for small, highly intricate engine internals, but they are severely constrained by limited build envelopes and the high cost of atomized powders.
Wire Arc Additive Manufacturing (WAAM) also operates without a restrictive build chamber (such as with our modularity and facility space freedom with MX3D MX Systems), unlocking a large build envelope capable of producing meter-scale aerospace structures and heavy tooling that powder-bed systems simply cannot reach. By utilizing a multi-axis robotic arm and standard, tested, and certified welding wire, WAAM provides a highly economical and rapid deposition method for large-format parts.
Crucially, WAAM fundamentally improves the “buy-to-fly” ratio. In traditional subtractive machining, producing large aerospace structures from billet material results in immense material waste, especially costly when dealing with premium alloys like Inconel or specialized aerospace aluminum. WAAM’s near-net-shape deposition cuts this material waste drastically, printing only the material that is structurally required before a final, minimal CNC machining pass.
Finally, it is important to define the engineering scope honestly: WAAM is designed for large structural elements, robust tooling, and heavy ground or space hardware. It is not deployed for fine-feature internal engine capillaries or compressor blades. By focusing on large-scale structural efficiency, WAAM solves procurement bottlenecks where they are most painful.
Aerospace Applications
WAAM is actively deployed to solve supply chain and engineering challenges across several distinct aerospace domains.
Structural Parts
For space modules, WAAM is utilized to fabricate large, load-bearing structural parts such as internal nodes, heavy-duty brackets, engine mounts, and structural connectors. By optimizing the topology of these parts, engineers can reduce weight while maintaining the necessary yield strength. For further insights into how this secures supply chains, read our brief on localized production for defense and aerospace and WAAM for defense .
Tooling and Fixtures
One of the most immediate and impactful fits for WAAM in the aerospace sector is custom tooling. The production of large composite lay-up tools, assembly jigs, and bespoke ground support equipment often suffers from long lead times when forged or cast. WAAM allows for the rapid, on-demand fabrication of big steel and aluminum tooling, accelerating the broader manufacturing cycle of the aircraft itself.
Space Hardware and Structures
The geometric freedom and lack of size constraints make WAAM highly attractive for space hardware. Applications include satellite structural frames, launch vehicle prototyping, and large-scale habitat infrastructure designed for off-world deployment.
UAV and Experimental Aerostructures
For unmanned aerial vehicles (UAVs) and experimental drone development, rapid iteration is critical. In this context, WAAM enables design teams to quickly print and test large experimental aerostructures without committing to expensive, permanent molds.
Meeting Aerospace Standards (Certification & Quality)
Aerospace applications demand rigorous quality assurance and strict adherence to certification frameworks such as NASA-STD-6030. MX3D operates a controlled, data-driven manufacturing environment designed to meet these exacting safety codes.
Our robotic production facility operates under comprehensive standards, including ISO 9001 quality management, AWS/IIW welding standards, and DNV certification. Furthermore, MX3D holds a Lloyd’s Register AM facility qualification, demonstrating our capability to consistently produce certified, structurally sound metal components. While AS9100 and specific EN aerospace standards represent distinct qualification pathways for flight-critical parts, our established marine and structural baseline provides the necessary metallurgical traceability required for aerospace tooling and ground support evaluation.
To guarantee internal structural integrity, we deploy comprehensive testing protocols. Learn more about our approach to non-destructive testing for WAAM parts and review the qualification pathways in our guide: Can WAAM parts be certified? .
Because WAAM produces a characteristic ribbed surface, final tolerances are achieved through post-weld machining. We integrate precise digital planning to account for these finishing steps. Discover more about managing machining allowances for near-net-shape metal prints .
Materials for Aerospace WAAM
Material selection is paramount for aerospace applications, where components are subjected to extreme thermal loads and high mechanical stress. MX3D strictly focuses on the alloys that cover the majority of large-scale aerospace structural and tooling use cases; notably, to ensure optimal process stability and cost-efficiency at scale.
Instead, our aerospace portfolio is anchored by the following verified materials, such as Scandium alloyed aluminum like 5183+Sc and:
- Inconel and nickel superalloys : We print Inconel 625 and 718 (UNS N06625/N07718). These nickel-based superalloys maintain exceptional high-strength structural integrity and oxidation resistance at elevated temperatures, making them ideal for hot-section components, exhaust hardware, and heavy thermal shielding.
- Aluminum 3D printing : We utilize aerospace-grade aluminum wires, including 2319 and 5356. These alloys are critical for fabricating lightweight aerostructures, UAV frames, and payload-sensitive space hardware where the strength-to-weight ratio is a primary engineering driver.
- Stainless steel 3D printing and HSLA: High-strength low-alloy (HSLA) and robust stainless steels are deployed heavily for robust ground support equipment, structural brackets, and big composite lay-up tooling.
For a complete overview of our verified metallurgy, review our materials and certification hub.
Featured Cases
The most significant validation of WAAM technology in the aerospace sector comes from delivered, field-tested projects.
The ESA Lunar-Habitat Floor
A prime example of WAAM’s capability for space infrastructure is the ESA lunar-habitat floor. Commissioned to demonstrate the viability of large-scale 3D printing for off-world construction, MX3D successfully fabricated this big space hardware structure.
Printed using 308LSi stainless steel, the habitat floor spans approximately 4.5 meters in diameter and weighs roughly 395 kilograms. This project, exhibited at the Venice Biennale 2021 in collaboration with SOM, proves that WAAM can successfully construct big, structurally sound space architecture that powder-bed systems cannot accommodate.
Read the full details in our ESA lunar-habitat floor case .
Get Started with Us
Transitioning your large aerospace tooling, ground support equipment, or space structures to WAAM requires an experienced manufacturing partner. MX3D offers flexible pathways to adopt the technology: we provide direct order metal parts on demand services from our Amsterdam facility, or we can deliver turnkey robotic systems for integration into your own aerospace manufacturing plants.
To initiate a project quote or feasibility study, our engineering team requires:
Digital Geometry: The native CAD file of the required component.
Alloy Specification: The target material (eg, Inconel 718, Aluminum 2319, or HSLA steel).
Certification Level: The specific testing, NDT, and quality assurance standards required for the part’s deployment.
Budget : an indication of the allocated budget for the desired project
Frequently Asked Questions About Aerospace 3D Printing
How is 3D printing used in aerospace?
In aerospace, 3D printing is used to manufacture complex, low-volume components quickly. While powder-bed technologies handle small engine internals, Wire Arc Additive Manufacturing (WAAM) is used to produce large near-net-shape structural parts, heavy-duty composite tooling, and space hardware using certified metal alloys.
What metals does MX3D use for aerospace?
MX3D utilizes a robust portfolio of industrial wires, focusing heavily on Inconel 625 and 718 for high-temperature applications, aluminum (2319 and 5356) for lightweight structures, and high-strength steels for tooling. To maintain optimal structural process stability at large scales, MX3D does not print titanium.
Can large aerospace parts be 3D printed?
Yes. By removing the physical constraints of a traditional 3D printing vacuum chamber, WAAM robotics can print aerospace structures, lay-up molds, and space hardware spanning several meters in length, offering a significant size advantage over conventional additive methods.
Is 3D printing used for space hardware?
Absolutely. WAAM is an ideal solution for prototyping and manufacturing large space structures, such as satellite frames and habitats. A proven example is the ~4.5-meter ESA lunar-habitat floor fabricated by MX3D for off-world infrastructure demonstration.
Are 3D printed aerospace parts certified?
Yes, structural components printed via WAAM undergo rigorous certification. MX3D operates under ISO 9001, AWS/IIW welding standards, and holds Lloyd’s Register and DNV facility qualifications. Parts are subjected to strict non-destructive testing (NDT) to ensure they meet required structural integrity codes before deployment.
