The next big change in how Apple manufactures its devices might not be immediately apparent, but it's certainly noticeable beneath the surface. The company is seriously exploring the option of producing the aluminum chassis of the iPhone and Apple Watch through Print 3D, drawing on its existing experience with titanium and other internal components.
As reported by journalist Mark Gurman in his newsletter Power OnApple has been experimenting with this for some time. additive manufacturing techniques applied to aluminum for the casings of upcoming Apple Watches and, at a later stage, for iPhone models. The idea is not limited to cutting costs: it involves rethinking the internal design, optimizing the use of materials, and reinforcing its sustainability message, something especially relevant in Spain and the rest of Europe.
From 3D printing in titanium to the leap to aluminum
This movement did not arise from nothing: Apple has already brought 3D printing to products sold in storesThe clearest example is the Apple Watch Ultra 3, whose unibody titanium casing is manufactured using a process that utilizes 100% recycled titanium powderInstead of starting from a solid block and removing material, the casing is generated layer by layer, making much better use of the raw material.
In that watch, additive manufacturing is more than just an environmental argument. Thanks to the layered constructionthe company can create internal textures and geometries that would be impossible with traditional forging or millingThese specific surfaces inside the chassis reinforce the bond between the metal and the plastic parts, a critical point in models with mobile connectivity, where the antenna needs a very delimited and well-insulated area.
These almost invisible details have practical consequences: printed textures help to improve the water resistance and structural integrity of the casing. In a device like the Apple Watch Ultra 3, designed for outdoor activities, mountaineering, or water sports, this improvement means less chance of leaks and a more robust watch against shocks and pressure changes.
3D printing has also reached less visible areas. In the iPhone AirApple uses additive manufacturing in the USB-C portby designing a thinner and more precise connector. This level of detail allows for a very slim phone profile without compromising the connector's robustness; without these techniques, the device would likely have had to be thicker.
At the same time, aluminum remains the dominant material in much of the product lineup: the standard Apple Watch, entry-level iPhones, and laptops like the MacBook Neo. Its combination of reduced weight, adequate resistance and affordable cost This makes it an almost mandatory option when manufacturing millions of units for the global market.
The internal project: 3D-printed aluminum chassis
According to Gurman's information, the Apple's manufacturing design team works hand in hand with the operations department all with Develop new methods of 3D printing in aluminumThe internal plan involves debuting this process on the aluminum casings of the Apple Watch and, if the results are satisfactory in terms of cost and quality, gradually extending it to iPhones.
This way of moving forward fits with the company's classic pattern: test an innovation in a specific productThey refine it in a relatively controlled volume and, when the technology matures, move it to more mass-market products. This happened with titanium and 3D printing in the Apple Watch Ultra 3, and everything suggests they could repeat the same approach with aluminum.
Among the objectives of this project, several very clear fronts stand out: to achieve a more efficient use of metalThis significantly reduces industrial waste and allows for internal structures that would be impossible with conventional machining. Added to this is a strong focus on the use of recycled aluminum, a message Apple emphasizes particularly in Europe, where environmental regulations are becoming increasingly stringent.
At the same time, the company has already begun to optimize its processes with this metal in other products. MacBook NeoIts most affordable laptop uses a shaping technique that allows trimming around a 50% of the amount of aluminum used compared to previous methods. Instead of starting from a large block that is gradually hollowed out, it begins with an extrusion that is flattened and shaped with heat and pressure to get very close to the final volume before precision machining.
This "use only what's necessary" approach makes it clear that the Efficiency in the use of materials has become a strategic pillar For Apple, this not only improves margins by reducing waste, but also aligns with the environmental commitments the company makes to European institutions and consumers, where recycling and reducing the carbon footprint are increasingly important in brand perception.
Technical challenges of 3D printing aluminum
Making the leap from titanium to aluminum is not simply a matter of changing the metal powder and remaining the same. 3D printing on aluminum is a much more complex process for several technical reasons. Its high reflectivity and high thermal conductivity make it difficult for the laser to maintain the energy needed to melt the material uniformly, which requires extremely fine control of the power and scanning strategy.
Added to this is the need to avoid micro-holes or internal pores that could reduce the mechanical resistance of the chassis. In sectors such as aviation and automotive, where 3D printing of aluminum is already used in specific parts, significant investment is made to ensure consistent density and internal quality. Transferring that level of rigor to the mass production of small consumer devices is a considerable challenge.
For these reasons, this type of process has so far been reserved mainly for very specific applications, where weight savings and complex geometry justify the effortIf Apple successfully applies this technique to millions of iPhones and Apple Watches, it would represent a significant leap forward in the way consumer electronics are manufactured.
Although the company recycles leftover material whenever possible, the key lies in avoid generating waste from the beginningA finely tuned additive process prints only the metal that is actually needed, cutting both waste and subsequent machining time, while also reducing associated energy consumption.
In this context, the MacBook Neo serves almost as a prelude: it demonstrates that Apple is willing to completely rethink its aluminum manufacturing methods, even though it doesn't yet use 3D printing in that laptop. The next natural step would be to extend that same spirit of optimization to the iPhone and Apple Watch chassis.
Impact on the design of the iPhone and the Apple Watch
If 3D printing of aluminum ends up being widely applied to iPhone casings, the change won't be just a simple note in the technical specifications. Building the chassis layer by layer allows access to much more complex internal geometries without the need to assemble multiple parts or resort to intensive milling that generates a large amount of chips.
In practice, this opens the door to playing with internal reinforcements, custom cavities, and dedicated channels for antennas and other componentsIn this way, the interior space for the battery, circuit boards, or camera modules can be maximized, while eliminating material that does not contribute to rigidity or functionality.
Another point where this transition might be noticeable is the protection against water and dustExperience with the Apple Watch Ultra 3 shows that printing specific internal textures improves adhesion between metal and plastic in delicate areas such as the antenna housing. Applied to iPhones sold in Spain and the rest of Europe, this type of solution can reinforce the chassis seal and increase resistance to intensive daily use.
The ability to adjust the aluminum thickness only where it's really needed also leaves room for somewhat thinner or lighter devices without sacrificing structural rigidity. For those who spend many hours with their mobile phone in hand—whether working, chatting, or consuming content—a small weight reduction can make a noticeable difference in comfort, even if it seems like a minor change on the specifications sheet.
In the case of future aluminum Apple Watches, 3D printing would allow for very precise control of the weight distribution within the case. This could translate into watches that are more comfortable to wear and better balanced on the wristMaintaining resistance to bumps and drops. For users who use it daily for training, swimming, or outdoor activities, this balance between comfort and robustness is a compelling reason to upgrade.
Costs, sustainability, and potentially more affordable models
One of the obvious drivers behind this change is the reduction of manufacturing costsBy printing only the necessary metal and making better use of recycled aluminum, the process can be more economical than starting with solid blocks that are then intensively machined. This difference is multiplied when we talk about producing iPhones and Apple Watches in volumes measured in the millions.
That industrial saving opens the possibility that, over time, Apple may Adjust the prices of certain product ranges without putting so much strain on margins.Some analysts have even suggested the possibility of a more affordable iPhone, with configurations around the $499below models considered such as a possible iPhone 17e. Such a scenario could have a direct impact on European markets that are more sensitive to price, including Spain.
At the same time, 3D printing of aluminum fits with the strategy of Environmental responsibility and intensive use of recycled material which Apple frequently touts. Less metal waste, a high percentage of recycled aluminum, and processes with a lower carbon footprint per unit are arguments that align well with European Union policies on eco-design and recycling of electronic devices.
For the end user, these improvements are not always noticeable on the first day, but they do have an impact on the durability and in the useful life cycle of the devicesA better designed and more robust chassis usually registers less structural damage, reducing the need for costly repairs and making it easier for the product to have a second life in the used market or through official buyback programs.
It should be noted that, as of today, this entire plan is in the planning stage. internal development and researchApple has already demonstrated that it can launch products with 3D-printed cases — like the Apple Watch Ultra 3 — but producing aluminum cases on a large scale requires rigorously validating costs, manufacturing times, and final quality when we're talking about millions of units.
A discreet transition with an impact across the entire catalog
The big changes in manufacturing processes and industrial design Apple products rarely announce their innovations with great fanfare. They usually appear first in a specific model, almost silently, and then gradually spread to the rest of the product lines as the technology becomes more established and the numbers add up.
The use of recycled titanium and 3D printing in the Apple Watch Ultra 3's casing fits perfectly with this pattern. If the strategy works—and all indications are that it will—it wouldn't be surprising if the company repeated the move with the 3D printed aluminum: start with the aluminum Apple Watch, refine the processes and, later, bring the technology to the iPhones that are mass-marketed in Europe.
In parallel, the adoption of new lower-cost aluminum processes in the MacBook NeoAlthough 3D printing is not yet available, this reinforces the idea that Apple is completely overhauling how it works with this metal. The combination of material savings, maintaining rigidity, and the possibility of redesigning the internal components of devices seems to be shaping the roadmap for the next generation of products.
For European consumers, accustomed to changes such as the mandatory use of USB-C or new recycling regulations, it would not be surprising if the company took advantage of these aluminum chassis manufacturing processes to reinforce its image as a company committed to the environment, while expanding its presence in more varied price segments.
Everything points to 3D printing becoming one of the key tools in Apple's industrial arsenal. After initial steps with titanium and tests on parts like the USB-C port, the leap to aluminum chassis of the iPhone and Apple Watch It is shaping up to be the logical move to achieve devices that are more materially efficient, structurally more robust and, potentially, somewhat more accessible, while maintaining the design and finish that have defined the brand over the last decade.
