3D printing in aerospace is not only used to make rapid prototypes, but also production tooling, inspection fixtures, replacement parts, cabin components, and critical flight-ready parts. It is particularly valuable when manufacturers need low-volume components, complex geometries, shorter lead times, or strong parts with less weight.
Aerospace manufacturers were among the earliest adopters of additive manufacturing. Today, the technology supports work across aircraft development, production, maintenance, repair and overhaul.
Modern aerospace 3D printing solutions can manufacture both composite and metal parts. The right process depends on the application, operating environment, production quantity, material requirements, and qualification pathway.
How is 3D printing used in aerospace?
Aerospace companies most commonly use additive manufacturing for:
- Rapid prototypes and surrogate parts
- Jigs, fixtures, drill guides, and inspection gauges
- Maintenance and replacement components
- Customized cabin and cockpit parts
- Low-volume production
- Lightweight composite components
- Complex metal parts
- Part consolidation and assembly simplification
Not every aerospace application requires a flight-ready component. In many cases, the largest immediate savings come from tooling, fixtures, prototypes, and manufacturing aids that never leave the factory floor.
Why aerospace manufacturers use additive manufacturing
Faster prototyping and development
Traditional aerospace components may require specialized machining, custom tooling, and lengthy procurement cycles. Additive manufacturing allows engineers to move from a CAD model to a physical part in hours or days rather than weeks.
A printed surrogate component can also keep an aircraft assembly moving while the final machined part is still in production. The aerospace whitepaper describes a temporary fairing that allowed work on a flight deck to continue during the approximately four-month lead time for the permanent metal component.
Economical low-volume production
Aerospace frequently requires small batches, one-off parts, and highly customized components. These quantities can be expensive to produce with machining, molding, or traditional composite tooling.
With additive manufacturing, the cost of a component is less dependent on production volume or tooling amortization. This makes the process well suited to replacement parts, customized aircraft interiors, experimental aircraft, and specialized mission equipment.
Lightweight, high-strength parts
Reducing aircraft weight can support fuel efficiency, payload capacity, and overall aircraft performance. Additive manufacturing allows engineers to use internal infill, topology optimization, part consolidation, and reinforced composites to remove unnecessary material.
Markforged’s continuous fiber 3D printing technology places continuous fibers within a thermoplastic part. In suitable designs, these parts can deliver an aluminum-like strength-to-weight ratio while weighing considerably less than comparable metal components.
For more detail, see how manufacturers are replacing aluminum parts with 3D-printed carbon fiber.
Reduced dependence on external suppliers
Parts can be printed closer to the point of use instead of being manufactured remotely and shipped through a long supplier network.
For maintenance teams, this can reduce the time an aircraft remains grounded while waiting for a replacement component. Digital files can also be stored and produced when needed, reducing the need to hold physical inventory for every low-volume part.
Aerospace 3D printing applications
Rapid prototypes and surrogate parts
Aerospace prototypes must often reproduce the form, fit, and assembly characteristics of the final part. High-quality composite printers can produce functional prototypes that are strong enough for handling, installation testing, and iterative design work.
Examples include:
- Fairings and covers
- Door and window hardware
- Brackets and mounts
- Instrument panel components
- Ducting and housings
- Full-scale assembly surrogates
Printing these parts can also reduce the amount of machinist time devoted to early prototypes. Machinists can remain focused on tight-tolerance production work while engineers passively print design iterations.
Aerospace tooling, jigs, and fixtures
Tooling is one of the most established aerospace applications for additive manufacturing.
Common examples include:
- Drill templates
- Check gauges
- CMM fixtures
- Forming tools
- Weld fixtures
- Assembly aids
- Soft jaws
- Workholding fixtures
Aerospace tools frequently require complex or conformal surfaces. Machining those geometries can require a larger block of raw material, extensive programming, and significant machine time. A 3D-printed tool can often be produced directly from its final geometry without added cost for complexity.
Continuous carbon fiber can reinforce tools that need additional stiffness or resistance to bending.
MRO and replacement parts
Maintenance, repair, and overhaul providers must support aircraft that may remain in service for decades. Original tooling may be lost, suppliers may no longer exist, and certain components may be difficult to procure economically.
Additive manufacturing can help reproduce suitable replacement parts or the tooling needed to manufacture them. It can also support short-run production without requiring an organization to recreate expensive legacy tooling.
Potential applications include:
- Brackets and clips
- Covers and protective components
- Cable-management hardware
- Custom adapters
- Replacement nut plates
- Maintenance tools
- Aircraft-specific installation aids
Flight installation still requires the appropriate engineering review and approval. However, many tools, surrogates, and ground-use components can deliver value without entering the flight qualification process.
Cabin and cockpit components
Aircraft interiors frequently require low-volume parts with precise fit, low weight, clean surface finishes, and flame-resistant material properties.
Examples include:
- Screen bezels
- Control-unit housings
- Console components
- Switch panels
- Mounting brackets
- Handles and knobs
Additive manufacturing makes it easier to customize these parts for different airframes or customer requirements without creating dedicated tooling for every configuration.
Flight-ready and structural components
Aerospace manufacturers are gradually qualifying more additively manufactured parts for in-flight use. Suitable applications may include cabin components, brackets, housings, clips, ducting, and non-critical structural parts.
Qualification depends on the specific part, material, manufacturing system, loading conditions, operating environment, and applicable regulatory requirements. A material being described as aerospace-ready does not automatically make every printed component approved for flight.
What materials are used for aerospace 3D printing?
Aerospace additive manufacturing uses both composite and metal materials.
High-performance thermoplastics
High-performance polymers are used where parts require low weight, heat resistance, chemical resistance, flame resistance, or dimensional stability.
ULTEM 9085 Filament is a PEI thermoplastic commonly associated with aerospace interiors because of its flame, smoke, and toxicity characteristics. It can be used for parts such as brackets, handles, knobs, interior panels, and housings.
PEKK-based materials may be selected for higher-temperature applications, chemical resistance, and low-outgassing requirements.
Note: Confirm the current availability and preferred product language for Vega before including a direct product reference or internal link.
Flame-retardant composite materials
Onyx FR is a flame-retardant, chopped carbon fiber-filled nylon designed for applications where flammability performance is important.
Its traceable FR-A variant can be paired with Continuous Carbon Fiber FR-A to produce stronger parts while supporting aerospace material documentation and traceability requirements.
Continuous carbon fiber
Continuous Carbon Fiber adds stiffness and strength along user-defined paths within a printed component.
Engineers can reinforce outer walls, holes, load paths, and specific high-stress areas rather than making an entire component solid. This can improve part performance while controlling material use and weight.
Aerospace metals
Metal additive manufacturing is useful when an application requires metal-specific properties such as high-temperature performance, wear resistance, conductivity, or compatibility with existing metal assemblies.
Common aerospace metal AM materials include stainless steels, tool steels, nickel-based superalloys, titanium, aluminum, and copper. Markforged’s guide to metal 3D printing materials provides a broader comparison.
Composite and metal additive manufacturing should not be treated as interchangeable. Composite AM is often a strong fit for tooling, fixtures, prototypes, cabin parts, and lightweight components. Metal AM is more appropriate when the application fundamentally requires metallic properties.
Can 3D-printed aerospace parts be certified?
Yes, but certification and approval are tied to the complete part and manufacturing process, not simply to the printer.
Qualification may require documentation and testing related to:
- Material traceability
- Mechanical properties
- Flame, smoke, and toxicity performance
- Temperature exposure
- Chemical and fluid resistance
- UV exposure
- Vibration
- Dimensional accuracy
- Manufacturing repeatability
- Inspection records
For cabin interior applications, requirements such as 14 CFR 25.853 may be relevant. Manufacturers may also use material data developed through programs such as the National Center for Advanced Materials Performance.
Traceable materials generally include documentation identifying the material lot, manufacturing history, and test results. Certificates of Conformance and Certificates of Analysis can help establish that parts are being manufactured from consistent material.
Digital inspection can also support qualification workflows. Markforged’s Eiger software and connected Digital Forge platform help centralize print preparation, production records, and manufacturing data.
What should aerospace teams look for in a 3D printer?
There is no single best 3D printer for every aerospace application. The correct system depends on what the organization needs to produce.
Important evaluation criteria include:
- Dimensional accuracy and repeatability
- Available aerospace-grade materials
- High-temperature capability
- Continuous fiber reinforcement
- Build volume
- Production speed
- Material traceability
- In-process inspection
- Software security and access control
- Operator and facility requirements
- Availability of material and process data
- Support for composite, polymer, or metal parts
Within the Markforged portfolio:
- The FX20 is suited to large-format, high-temperature composite parts and tooling.
- The FX10 supports accurate composite tooling, fixtures, prototypes, and continuous fiber reinforcement.
- With the FX10 Metal Kit, applications that require metallic properties such as wear resistance, conductivity, or high-temperature performance are able to be printed at the point of need.
The application should determine the printer, not the other way around.
Aerospace 3D printing trends to watch
Greater use beyond prototyping
Aerospace 3D printing is continuing to move from visual prototypes toward functional tooling, low-volume production, MRO, and qualified end-use parts.
Prototyping remains important, but companies increasingly want equipment that can support multiple stages of the manufacturing process.
More traceable, application-specific materials
Material traceability and repeatable processing are becoming increasingly important as manufacturers pursue additional flight-ready applications.
High-temperature polymers, flame-retardant materials, continuous fiber composites, and qualified metal alloys are expanding the range of parts that can be considered for additive manufacturing.
Digital inspection and production records
Inspection is often one of the most time-consuming parts of aerospace manufacturing. In-process measurement and centralized digital records can help teams detect issues earlier and maintain documentation over the full service life of a component.
This is particularly important in regulated industries where manufacturing records may need to remain accessible for years.
Part consolidation
Combining multiple components into one printed part can reduce assembly labor, fastener count, inventory complexity, and tolerance-stack issues.
Point-of-need MRO
Aerospace maintenance organizations are evaluating additive manufacturing as a way to produce suitable tools and replacement components closer to the aircraft.
This is especially relevant for aging fleets, remote maintenance locations, military aviation, and aircraft with low-volume legacy parts.
Composite and metal AM working together
Aerospace organizations do not need to choose between composite and metal additive manufacturing as a company-wide strategy.
A composite printer may produce lightweight tooling, fixtures, and cabin parts, while a metal system produces components that require temperature resistance, wear resistance, or metallic properties. The two technologies address different sections of the application portfolio.
Aerospace 3D printing examples
- Top Flight Aerostructures printed a reinforced forming tool that was used in a 100-ton hydraulic press to form a bracket for a C-5M Galaxy aircraft. The tool avoided CNC programming and reduced the cost, labor, and machine capacity required for conventional tooling.
- ALOFT Aeroarchitects, in partnership with Spectrum Networks, LLC uses the FX10 to print over 10,000 certified 3D printed aircraft parts that are flying today.
- Hangar One Avionics printed a customized cockpit console and cupholders instead of machining them from raw material in a process that could generate up to a 65% scrap rate. Printing the component also freed machinists for other production work.
- JJ Churchill used continuous carbon fiber-reinforced inspection fixtures to support precise inspection of jet-engine turbine blades.
- Cabin Management Solutions used composite printing to manufacture customized cabin-control and entertainment components for private and business aircraft.
Our whitepaper on 3D Printing Composites for Aerospace includes several examples of additive manufacturing in production aerospace environments.
Frequently asked questions about aerospace 3D printing
How is 3D printing used in aerospace?
Aerospace companies use 3D printing for prototypes, tooling, jigs, fixtures, inspection gauges, MRO components, cabin interiors, low-volume production, and selected flight-ready parts. The technology is most valuable where low production quantities, customization, complex designs, or long traditional lead times make conventional manufacturing inefficient.
What are the advantages of 3D printing in aerospace?
The main advantages include shorter lead times, lower tooling costs, reduced material waste, lightweight designs, part consolidation, low-volume production, faster prototyping, and point-of-need manufacturing.
What is the best 3D printer for aerospace parts?
The best system depends on the application. Large composite tooling and high-temperature polymer parts may require a printer such as the FX20. Smaller reinforced composite tooling and fixtures may fit the FX10 or the X7. Metal parts may require a system or metal additive manufacturing process.
Can carbon fiber 3D-printed parts replace aluminum?
Yes. In suitable applications, continuous carbon fiber-reinforced parts can provide strength and stiffness comparable to aluminum at a lower weight. The design, fiber placement, loading direction, temperature, and operating environment must all be considered before replacing a metal component.
Bringing aerospace parts from concept to flight
Aerospace additive manufacturing is no longer limited to concept models. It now supports functional prototypes, production tooling, inspection fixtures, customized cabin components, MRO applications, and a growing range of qualified end-use parts.
The most successful aerospace programs begin with a clearly defined application. Manufacturers should evaluate part requirements, material properties, production volume, inspection needs, and qualification pathways before selecting a printer or process.
Markforged combines composite and metal printing systems, high-performance materials, continuous fiber reinforcement, and connected software to support aerospace parts from the factory floor through selected flight-ready applications.
