The Metal Revolution: How 3D Printing Is Rewriting the Rules of What Metal Can Do

There is a moment in every industrial revolution where the question changes.

It stops being can we do this? — because the answer to that is usually yes, given enough money, enough time, and enough specialized equipment. The real question — the one that separates a laboratory curiosity from a technology that changes the world — is can we do this here, now, by the people who actually need it, at a cost that makes sense?

Metal 3D printing has been answering the first question for decades. In laboratories, in aerospace programs with unlimited budgets, in research institutions where cost is secondary to capability. The machines were magnificent and the results were extraordinary and almost nobody outside defense and aerospace could afford to find out.

In 2026, metal 3D printing is answering the second question.

The machines are on factory floors. In machine shops. In the field, being unpacked from Pelican cases in remote locations by military logistics teams who need a replacement part and have no supply chain to call. In dental labs. On automotive production lines. In the hands of engineers who need to move from a CAD file to a functional metal component overnight — and then do it again tomorrow with a different design.

The revolution isn't coming. It's here. And Markforged is one of the companies that brought it.

The Problem Metal 3D Printing Was Built to Solve

Traditional metal manufacturing is extraordinary — and extraordinarily constrained.

CNC machining produces metal parts with superb dimensional accuracy. It also requires: a block of raw material significantly larger than the finished part (most of which ends up as chips on the floor), a machine programmed specifically for that geometry, setup time measured in hours for complex parts, and minimum quantities that make one-off production economically irrational.

Metal casting produces near-net-shape parts efficiently at volume. It also requires: tooling that costs thousands to tens of thousands of dollars per design, lead times measured in weeks, and design constraints imposed by the requirement that molten metal flows and solidifies predictably through a mold.

Both technologies are essential. Both are irreplaceable for the applications they serve well. And both have a gap — a specific set of applications where the combination of design freedom, small quantity, and rapid iteration required is simply not achievable at any price point.

That gap is where metal 3D printing lives. And in 2026, it's a gap that spans an enormous range of industries, applications, and budget tiers.

Chapter 1: Markforged — The Company That Made Metal Printing Accessible

To understand where metal 3D printing is in 2026, you need to understand where it was in 2017.

Metal 3D printers existed. They used laser powder bed fusion (LPBF) — directing high-power lasers at beds of fine metal powder, fusing it layer by layer into solid geometry. The results were genuinely extraordinary: parts with mechanical properties approaching or matching wrought metal, complex internal geometries impossible by any other method, direct production from digital files without tooling.

The price tag: $500,000 to $1,000,000. Per machine. Plus the safety infrastructure for handling fine metal powders. Plus the inert atmosphere equipment. Plus the trained operators.

Metal 3D printing was, in the most literal sense, not for most people.

Then Markforged introduced the Metal X at CES 2017.

The ADAM Process: A Different Philosophy

The Markforged Metal X uses a fundamentally different approach called ADAM — Atomic Diffusion Additive Manufacturing. Where laser powder bed fusion starts with loose metal powder and fuses it with a laser, ADAM starts with metal powder embedded in a polymer matrix — essentially a metal filament, handled and printed with the same basic mechanics as a filament FDM printer.

The process has three stages:

Print: The Metal X deposits layers of metal-polymer filament using a precision extrusion system. The part emerges as a "green" component — metal powder held in shape by the polymer binder. Laser-assisted process control scans each layer during printing, verifying dimensional accuracy before the next layer begins.

Wash: The printed green part goes into the Markforged Wash station, which removes the wax-based binder component using a proprietary wash fluid. This leaves a "brown" part — metal powder held in shape only by the remaining backbone polymer, slightly porous and fragile.

Sinter: The brown part goes into the Sinter furnace — a precisely controlled tube furnace that burns away the remaining polymer at a carefully managed temperature profile, then heats the part to near its melting point. At this temperature, the metal particles fuse together through atomic diffusion, producing a fully dense metal component. Density up to 99.7%. Mechanical properties approaching wrought equivalents.

The three-stage process takes longer than laser powder bed fusion for a given part. But the Metal X costs dramatically less than a laser machine, requires no loose powder handling, no inert atmosphere infrastructure, no laser safety protocols, and can be operated by an engineer rather than a specialist.

Print overnight. Have metal parts in the morning. That was the promise in 2017. In 2026, the system delivers on it routinely.

The Metal X Material Library

The Metal X and its successors print in a materials range that covers the majority of industrial metal applications:

17-4 PH Stainless Steel — The workhorse. Precipitation hardened stainless with high strength, hardness, and corrosion resistance. Tensile strength up to 1170 MPa post-heat-treatment. Used for tooling, fixtures, functional hardware, and components requiring stainless steel's combination of strength and corrosion performance.

H13 Tool Steel — The die steel. Exceptional hot hardness and thermal fatigue resistance. Used for injection mold tooling, die casting inserts, punches, and dies where thermal cycling and compressive loads are the operational reality.

A2 Tool Steel — Air-hardening tool steel for cutting tools, punches, and dies where dimensional stability during heat treatment is critical.

D2 Tool Steel — High-carbon, high-chromium steel for cold work tooling requiring exceptional wear resistance.

Inconel 625 — The superalloy. Nickel-chromium alloy with outstanding performance at elevated temperatures and in corrosive environments. For aerospace, marine, and chemical processing applications where steel reaches its limits.

Pure Copper — The conductor. 100% copper for heat exchangers, inductors, bus bars, and any application requiring copper's unmatched electrical and thermal conductivity in a complex geometry that conventional fabrication can't produce.

Titanium Ti-6Al-4V — The aerospace and medical standard. High strength, low weight, and biocompatibility for implant-adjacent applications and structural aerospace components.

Each material has specific Eiger slicer profiles, pre-validated wash cycles, and sintering curves — the full process stack is managed within Markforged's cloud-based Eiger software, which means an operator doesn't need to know the metallurgy. They select the material, and the software handles the rest.

Chapter 2: The FX10 — Where Composite and Metal Converge

In 2023, Markforged launched the FX10 — and with it, introduced a platform architecture that represents the next phase of industrial additive manufacturing.

The FX10 is the first industrial metal and composite 3D printer — the product of years of engineering innovation and technological advancement. Built on the success of the Markforged X7 and Metal X, FX10 quickly delivers strong, accurate tools and fixtures to your factory floor.

The defining feature is modularity. FX10 features a modular print system that enables users to swap between metal and composite print engines quickly and efficiently. All FX10s have composite capability, with metal capability as a purchasable add-on.

The FX10 Metal Kit — announced in 2024 — expanded the platform to include stainless steel printing. Through the new FX10 Metal Kit, the industrial additive manufacturing machine is capable of printing with metal filaments, including a new stainless steel offering. The system launched at the end of last year, with the ability to print composites. That includes carbon fiber and adjacent materials, including a carbon-fiber-filled nylon. The Boston-area company says it's capable of printing parts "as strong as 6061-T6 Aluminum."

The architectural significance goes beyond the hardware. "We designed the FX10 to be a modular platform, so that we are able to release new innovations and upgrades without customers having to purchase a new printer every year," CEO Shai Terem says. In an industry where rapid hardware evolution has historically required customers to replace entire capital investments every few years, a modular upgrade path is genuinely transformative for the economics of adoption.

Printhead-mounted optical sensors can verify the dimensional accuracy of parts and assess device health and performance. FX10 utilizes automatic calibration and material changeover, yielding a simple, low-touch user experience that mitigates the need for dedicated operators.

That last point — "mitigates the need for dedicated operators" — is the phrase that matters most for industrial adoption. The traditional metal printer required a specialist. The FX10 requires an engineer. That difference collapses the operational cost structure for manufacturers who can't justify a full-time additive manufacturing technician.

Chapter 3: The PX100 — Binder Jetting Enters the Picture

While the Metal X and FX10 have defined Markforged's accessible metal printing story, the company's 2026 roadmap introduces a more sophisticated technology for higher-volume production applications.

Markforged announced a live webinar spotlighting its cutting-edge PX100 metal binder jetting system. Designed for manufacturing professionals, engineers, designers, and R&D leaders, the webinar explores the PX100's key performance advantages — including high throughput, exceptional part quality, and expansive design freedom — through real-world case studies and data-driven insights.

Binder jetting is a different process from ADAM. Rather than extruding metal-polymer filament, a binder jetting system deposits a liquid binding agent into a powder bed, layer by layer, creating a green part that is then sintered. The advantages over extrusion-based metal printing: faster throughput, better surface finish on complex geometries, and the ability to print multiple parts simultaneously in the powder bed.

The webinar tackles how the PX100 bridges the gap between traditional metal injection molding (MIM) production and next-generation 3D printing research. That positioning — between MIM volume production and laboratory R&D — identifies exactly the market gap binder jetting is best suited to fill: medium-volume production runs of complex metal parts where MIM tooling investment isn't justified and LPBF speed isn't sufficient.

Chapter 4: The Broader Metal 3D Printing Landscape in 2026

Markforged is the most accessible entry point into metal 3D printing — but it's one part of a landscape that has matured dramatically across multiple technology tiers.

Laser Powder Bed Fusion (LPBF) — Still the Performance Leader

LPBF remains the dominant technology for high-performance metal 3D printing — and for good reason. A high-power laser fusing metal powder layer by layer produces parts with mechanical properties that no other additive process currently matches for demanding applications.

Laser powder bed fusion will continue to be the dominant printing technology in the aerospace space, with significant growth in directed energy deposition usage in the next few years as the Maritime Industrial Base initiative in the US builds momentum.

The Nikon SLM NXG XII 600 runs twelve 1kW lasers simultaneously, producing metal parts at throughput rates that were impossible five years ago. EOS, Trumpf, Renishaw, and Velo3D compete at the high-performance tier with machines that produce aerospace-certified structural components, rocket engine injectors, and turbine blades with internal cooling channels no conventional process could manufacture.

The cost has not fallen to Markforged levels — LPBF machines still run $500,000–$2M+ depending on laser count and build volume. But the applications that justify that investment have expanded significantly as the technology has matured and as aerospace, defense, and energy industries have validated additive manufacturing in their production qualification frameworks.

Directed Energy Deposition (DED) — Repair and Large Scale

DED systems direct focused energy (laser, electron beam, or plasma arc) onto a substrate while simultaneously depositing metal wire or powder feedstock. The result is metal deposition at rates that dwarf LPBF — suited for large structures, and uniquely suited for repair and refurbishment of existing metal components.

A DED system can add material to a worn turbine blade, restoring it to dimensional specification, at a fraction of the cost of replacement. It can build large structural components — frame sections, brackets, pressure vessel bosses — that exceed the build volumes of any powder bed system. DED is carving out a strong position within defense applications. The technology meets sector needs for specialized components and complex operations.

Metal Binder Jetting — The Volume Production Opportunity

Metal binder jetting is in the process of maturing for higher-volume applications. As the technology continues to evolve, larger production volumes and the introduction of new materials are set to drive increased demand. Significant progress is anticipated, with metal binder jetting poised to overcome previous limitations and make notable advancements in the market.

Desktop Metal (now part of Nano Dimension, alongside Markforged following the April 2025 acquisition) pioneered the accessibility argument for binder jetting with the Shop System and Studio System. The combination of high throughput, good surface finish, and no-laser safety infrastructure makes binder jetting particularly attractive for production environments where LPBF's operating requirements are impractical.

Cold Spray and Emerging Processes

Beyond the established technologies, emerging processes are expanding the boundaries of what metal additive manufacturing can do. Cold spray — accelerating metal powder to supersonic velocities and impacting it onto a substrate — produces dense metal coatings and repairs without the heat-affected zones that laser processes create. Electron beam melting (EBM) processes materials like titanium in a vacuum with an electron beam, producing parts with lower residual stress than laser processes and unique microstructural characteristics for specific aerospace applications.

Chapter 5: Where Metal 3D Printing Is Actually Being Used

The applications have moved well beyond prototyping and into production. Here's where metal additive manufacturing is genuinely deployed at scale in 2026.

Aerospace — The Proving Ground

Aerospace was always the natural home of metal 3D printing — the combination of complex geometry requirements, small production volumes, extreme performance demands, and the economics that justify expensive manufacturing processes created a perfect fit from the beginning.

Examples from New Frontier Aerospace, POLARIS Spaceplanes, AVIO SpA, and Agnikul Cosmos demonstrate that additive manufacturing is now fully integrated into aerospace programs. These advances have been enabled by the continued evolution of metal additive manufacturing solutions capable of producing parts that withstand high temperatures and extreme mechanical stresses.

The rocket engine injector is the canonical aerospace metal AM application — internal cooling channels that serpentine through the metal wall, geometries that would require dozens of separately machined and brazed parts reduced to a single printed component. GE Aviation's LEAP engine fuel nozzle, printed from cobalt-chrome alloy, is perhaps the most-cited example of metal AM in production aerospace — a single printed part replacing an assembly of twenty individually machined components.

The vision of 3D printing in zero gravity remains very much alive. Following the first metal 3D printing operation carried out in space by the European Space Agency at the end of 2024, multiple additional tests were conducted throughout 2025 to determine which materials and processes can function effectively under microgravity conditions.

Defense and Field Manufacturing

Additive manufacturing must be engineered, qualified, and certified for the most demanding US defense programs. For the defense sector, additive manufacturing addresses a fundamental logistics challenge: the impossibility of pre-positioning every spare part that might be needed in every location where military equipment operates.

The Markforged X7 Field Edition — a ruggedized version of their composite printer deployable in remote and combat environments — represents the physical embodiment of this doctrine. A logistics operation that can print the replacement part at the point of need, rather than waiting weeks for it to arrive through a supply chain, operates with a fundamentally different resiliency profile.

Metal printing in the field is the next phase of this capability. The ability to print a failed metal component — a bracket, a gear, a housing — from a machine that fits in a transportable case transforms supply chain mathematics for deployed military operations.

Automotive — Tooling and End-Use Parts

Manufacturers 3D print their own parts for hundreds of uses along their lines, faster and at lower cost. The Danone dairy plant in Bierun, Poland 3D printed vacuum grippers for their packaging line, cutting part costs across 274 parts by 80%. Their Markforged X7 paid for itself in one year.

For automotive specifically, the applications cluster around tooling — fixtures, jigs, end-of-arm tooling for robots, press dies for prototype production runs — where the combination of design freedom and rapid iteration dramatically compresses development cycles. Where a conventional machined tool might take three weeks to procure, a metal-printed equivalent is ready the next morning.

GM's Cadillac CELESTIQ program includes over 130 3D printed parts — including the first printed metal safety component in a production GM vehicle. BMW's Landshut facility has integrated automated 3D-printed sand core production into its foundry workflow. Metal printing is no longer a prototype tool in automotive — it's a production technology.

Medical and Dental

Custom implants, surgical guides, and patient-specific medical devices are natural applications for metal 3D printing — the combination of complex patient-specific geometry, premium materials (titanium, cobalt-chrome), and small production quantities (often a batch of one) fits the technology perfectly.

Titanium craniofacial implants, custom hip and knee components, dental implant abutments, surgical cutting guides with patient-specific reference geometry — these applications leverage metal AM's core advantage: the same complexity costs the same as simple. The cost of printing a titanium implant perfectly contoured to a specific patient's anatomy is not higher than printing a generic shape. The manufacturing process is indifferent to geometric complexity.

Oil, Gas, and Industrial

Remote field operations — oil platforms, mining sites, chemical processing facilities — share the defense sector's fundamental problem: the impossibility of maintaining complete spare part inventory in locations that are difficult to resupply. Metal 3D printing at the point of need addresses this directly. A printed valve body, pump impeller, or heat exchanger component produced on-site prevents days of production downtime waiting for a part to arrive from a distant warehouse.

Chapter 6: What 2026 Looks Like — Maturity and Scale

2026 will see steady growth relative to application development, qualification, and scaling. The focus from many machine OEMs has been on increasing production capabilities with advances that support both increases to part quality as well as increases in productivity. These advances support the perspective that the focus is on qualification and production.

The narrative around metal 3D printing has shifted. The question is no longer "can it produce a good part?" The demonstrated answer is yes, across multiple technologies, for a wide range of materials and applications. The 2026 questions are:

Qualification and certification. For aerospace, medical, and defense applications, parts must be certified to specific standards before deployment. The qualification frameworks — the testing protocols, the process documentation requirements, the statistical validation of consistency — are maturing rapidly. Each qualification milestone opens a new application to production adoption.

Economics at scale. Metal AM is cost-competitive with conventional manufacturing for small batches and complex geometries. As throughput increases and machine costs continue falling, the economic break-even point at which AM becomes competitive moves toward larger production volumes. The industry is actively tracking where that break-even sits for different technologies and applications.

Materials expansion. Major manufacturers such as Stratasys, HP, and Raise3D expanded their portfolios to include new materials. The material library for metal AM is expanding steadily — new alloys, new composites, new specialty materials for specific application requirements. The more materials available, the more applications become accessible.

AI integration. Machine learning applied to process monitoring, quality prediction, and parameter optimization is producing measurable improvements in part consistency across metal AM platforms. The same AI revolution transforming consumer resin printing is running in parallel — and at greater financial stakes — across industrial metal systems.

The Quick Guide: Metal 3D Printing Technologies in 2026

The Bottom Line: Metal 3D Printing Has Grown Up

In 2017, Markforged introduced the Metal X and proved that metal 3D printing could be safe, accessible, and affordable for industrial users who weren't aerospace contractors. That thesis has been validated across nine years of production use on factory floors worldwide.

In 2025, Nano Dimension acquired both Markforged and Desktop Metal — consolidating two of the most important accessible metal printing companies under one roof, with combined technology spanning ADAM extrusion, binder jetting, and material development. The market began to stabilize in 2025, certain applications proved their real-world viability, and the industry consolidated real-world applications while undergoing a reconfiguration of key players — highlighting how 3D printing continues to evolve toward more comprehensive solutions tailored to industrial needs.

In 2026, the story of metal 3D printing is the story of a technology that has found its footing. Not in every application — conventional machining, casting, and forging remain essential and irreplaceable for the applications they serve best. But in the specific applications where design freedom, small quantities, rapid iteration, and point-of-need manufacturing are the requirements — metal additive manufacturing is no longer asking permission.

It is producing parts. On the factory floor. Overnight. From files that didn't exist this morning.

The revolution changed the question. The answer is metal. Now.

Working with metal 3D printing at any scale — or evaluating it for the first time? Tell us your application in the comments. The community's collective experience across industries is the best resource for anyone starting that journey.

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