Jet engines
GE Aerospace
The LEAP engine's fuel nozzle tip — once around twenty brazed pieces — is printed as one: roughly 25% lighter and reported as up to five times more durable. The GE9X carries more than 300 additive parts.
Earth LinC · field noteMaterialsApple 2026 Environmental Progress Report
This year every Apple Watch Ultra 3 and titanium Series 11 case was grown layer by layer from 100% recycled aerospace-grade titanium powder — instead of being milled out of a solid billet and swept up as chips. The saving: more than 400 metric tons of raw titanium in 2025.
“A novel idea transformed a prototyping approach, 3D printing, into a breakthrough production process that yielded significant savings in raw materials… 50 percent less raw material used than the previous generation.”
Apple 2026 Environmental Progress Report — apple.com/environment
Metric tons of virgin titanium that never had to be mined, melted, forged — or turned into swarf.
Less raw material used than the previous generation of the same product.
Recycled aerospace-grade titanium powder — a waste stream from one industry becoming stock for another.
Aerospace engineers have a blunt phrase for it: buy-to-fly ratio. To end up with one kilogram of finished titanium part, a machinist might start with six, eight, sometimes more — and shave the rest into chips. Titanium is one of the most energy-hungry metals we make, so most of that embodied energy leaves the shop as scrap.
Additive manufacturing inverts the verb. Nothing is removed; material is placed only where it is needed. That is why a consumer-scale decision — the back of a watch case — can register as hundreds of tons upstream. And it is why the same logic has been running quietly in jet engines, rocket chambers and turbine repair shops for a decade.
So the honest answer to “can anyone else do this?” is: several already are. Here is what they report, and where to check it.
Nine programmes · figures as published by each organisation
Jet engines
The LEAP engine's fuel nozzle tip — once around twenty brazed pieces — is printed as one: roughly 25% lighter and reported as up to five times more durable. The GE9X carries more than 300 additive parts.
Structural titanium
Rapid Plasma Deposition prints structural titanium parts flying on the Boeing 787 — the first FAA-qualified 3D-printed structural titanium. Norsk reports up to 50% less raw titanium input than machining from forgings.
Recycled powder
Turns titanium and nickel scrap, used parts and machining swarf back into aerospace-grade powder using microwave plasma — reporting roughly 91% less energy and 92% less water than conventional atomisation.
Airframes
Topology-optimised printed titanium brackets and the “bionic partition” cut component weight by around a third on A350-family aircraft — and every kilogram removed keeps saving fuel for the life of the plane.
Launch
The Vulcain 2.1 rocket engine injector head went from 248 separate components to a single printed part, with production cost and lead time both reported roughly halved.
Repair, not replace
Rather than scrapping worn gas-turbine burner tips, new material is printed back onto the original part — extending service life and cutting repair lead times by as much as 90%.
Series production
Its Additive Manufacturing Campus near Munich has printed hundreds of thousands of parts a year, with metal powder recirculated through the build loop instead of discarded after a single job.
Consumer goods
Digital Light Synthesis grows lattice midsoles directly from liquid resin — no injection moulds, no tooling steel, and cushioning tuned zone by zone rather than glued together from foam.
Volume metal
Binder jetting built for mass production rather than prototyping, with Volkswagen among the earliest adopters for structural metal components.
Read this before you cite it
Printing is not automatically greener. Per kilogram, laser powder-bed fusion can use more energy than forging; powders need careful handling, inert gas and recycling discipline; and the climate win depends on the grid behind the machine. The gain is real where the part is complex, the metal is precious, and the alternative was cutting most of it away — which is exactly titanium's situation.
All figures above are as published by the organisations themselves. Follow each link to the primary source before quoting a number.
Every link below is a primary or institutional source
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