The next big change in Apple's design might not be immediately visible, but it will certainly be felt in how its devices are manufactured. The company is seriously considering producing the 3D printed aluminum chassis for iPhone and Apple Watch, drawing on recent experience with titanium.
According to journalist Mark Gurman in his newsletter Power OnApple has been testing for some time additive manufacturing techniques applied to aluminum for the casings of future Apple Watches and, in a second phase, for iPhone models. The idea is not only to cut costs, but to rethink the internal structure of these products with more design freedom, better use of materials, and a strong focus on sustainability, something especially relevant in markets like Spain and the rest of Europe.
From 3D printing in titanium to the leap to aluminum
Apple doesn't start from scratch: It has already brought 3D printing to products that are in storesThe clearest example is the Apple Watch Ultra 3, whose unibody titanium case is manufactured using a process based on 100% recycled titanium powderThis system allows for much better use of metal than traditional machining from solid blocks.
In the case of that watch, 3D printing isn't limited to the environmental argument. When producing the casing... layer by layerApple can create internal textures and geometries impossible with classic forgingThese specific surfaces within the chassis improve the bond between the titanium and the plastic parts, a key point in versions with mobile connectivity, where the antenna needs a very specific and well-insulated area to function correctly.
These almost invisible details have practical effects: the printed textures help to reinforce the water resistance and structural integrity of the box. In devices like the Apple Watch Ultra 3, designed for sports, mountaineering or intensive use, this improvement is not theoretical; it means fewer possibilities of leaks and a more solid casing against shocks and pressure changes.
Additive manufacturing has also reached less conspicuous components. In the iPhone AirApple is turning to 3D printing in the USB-C port, as detailed in our iPhone review: design, screen and cameraThis allows them to design a thinner and more precise connector. Thanks to this, the phone maintains a slim profile without sacrificing robustness in this delicate area; without this technique, the device would likely have had to be thicker.
Within the current catalog, aluminum continues to be the primary material in many products, especially in the standard Apple Watch and the base iPhones. Its combination of Lightweight, durable, and reasonably priced This makes it an almost mandatory option when manufacturing millions of units for the entire world.
The internal project: 3D-printed aluminum chassis
According to information provided by Gurman, the Apple's manufacturing design team and operations department They are working together on new methods for 3D printing aluminumThe plan is to first apply this technology to Apple Watch cases and, if the results are as expected, extend it to iPhone cases later.
This strategy fits with the company's usual way of moving forward: test production innovations on a specific productThe process should be refined in relatively controlled volumes and, once validated, gradually rolled out to the rest of the product line. This is what happened with titanium in the Apple Watch, which eventually reached wider product ranges, and it could happen again with 3D-printed aluminum.
Among the key objectives of this project, one stands out. more efficient use of metal, trimming the excess material, a significant reduction of industrial waste and the ability to create internal structures far more complex than those possible with conventional machining. All of this with a strong emphasis on the use of recycled aluminum, an aspect that Apple highlights particularly in Europe, where environmental regulations are becoming increasingly stringent.
The concern for optimizing aluminum has already been seen in the MacBook NeoThe most affordable laptop from the brand. In this model, Apple has debuted a manufacturing process that reduces weight by approximately one percent. 50% of the amount of aluminum used compared to previous methods. Although 3D printing has not been used in this case, the way the metal is worked has been completely redesigned to limit its consumption without sacrificing a solid chassis.
These types of movements make it clear that the Material efficiency has become a strategic pillar For the company, this is due to both cost reasons and regulatory pressure and the expectations of European consumers regarding recycling, circular economy and the carbon footprint of electronic devices.
Impact on the design of the iPhone and the Apple Watch
If 3D printing of aluminum ends up being applied on a massive scale to iPhone casings, the change could have effects that go far beyond a simple press release. By building the chassis in layers, Apple gains access to much more complex internal geometrieswithout the need to combine multiple parts or resort to intensive milling processes that generate a large amount of chips.
In practice, this allows you to play with internal reinforcements, specific cavities and channels for antennas and other components very precisely. This allows for maximum optimization of the interior space for the battery, circuit boards, or camera modules, while reducing the amount of material that does not contribute to functionality or strength.
Another aspect where this transition can be noticed is the protection against water and dustExperience with the Apple Watch Ultra 3 demonstrates that printing specific internal textures improves adhesion between the metal and plastic parts in critical areas, such as the antenna housing. Applied to the standard iPhone sold in Spain and other European countries, this type of detail can reinforce the chassis seal and make it more resistant to daily use.
By being able to adjust the thickness of the aluminum only where it's really needed, it also opens the door to slightly lighter and thinner devices without sacrificing rigidity. For those who spend a good part of the day with their mobile phone in their hand—whether for work, messaging, or social media—a reduction in weight, even if it seems small on paper, can make a noticeable difference in comfort.
In the case of future aluminum Apple Watches, 3D printing would allow for very fine control of the weight distribution within the case. This could translate into thinner or more comfortable watches to wearWith the same resistance to shocks and drops as current models, this combination of robustness and lightness is an important factor when deciding to buy, especially for those who use their watch for training, swimming, or outdoor activities.
Costs, sustainability and the option of more affordable models
One of the driving forces behind this change is, evidently, 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 from solid blocks that are then machined and generate a large amount of waste, something especially relevant when the volume is measured in millions of units.
That saving in the industrial side opens the possibility that, over time, Apple can adjust the prices of certain ranges without putting too much pressure on their margins. Some analysts are considering the possibility of a more affordable iPhone, priced around $499 In certain configurations, it would fall below models such as the hypothetical iPhone 17e. Such a scenario could have a direct impact on price-sensitive markets within the European Union.
In parallel, 3D printing of aluminum aligns with the strategy of environmental responsibility Apple consistently highlights these benefits, especially to European institutions. Less metal waste, increased use of recycled aluminum, and processes designed to reduce the carbon footprint per device align with the EU's regulations on eco-design and recycling of electronic products.
For the end user in Spain or the rest of Europe, these improvements are not always visible on day one, but they do have an impact on the durability and in the life cycle of the deviceA better designed and more robust chassis tends to suffer less structural damage, reducing the need for costly repairs and making it easier for the device to have a second life in the used market or through official buyback programs.
It is important to keep in mind that, at this stage, this entire plan is still in the planning phase. internal development and researchApple has already demonstrated its ability to bring to market a product with a 3D-printed casing—like the titanium case of the Apple Watch Ultra 3—but the leap to producing aluminum casings on a large scale requires thoroughly validating costs, manufacturing times, and final quality when dealing with millions of units.
A subtle transition with effects across the entire catalog
The big changes in manufacturing processes and industrial design Apple's innovations rarely arrive with spectacular campaigns. They usually appear first in a specific model, almost under the radar, and gradually spread to the rest of the range as the technology matures and the results convince the engineers.
The use of recycled titanium and 3D printing in the Apple Watch Ultra 3's casing fits perfectly with this pattern. If that approach continues to work, it's reasonable to think the company will repeat the script with the 3D printed aluminum: start with the aluminum Apple Watch, establish it technically and, over time, bring it to the mass-market iPhones.
In parallel, the introduction of processes of lower-cost aluminum in the MacBook NeoAlthough still without 3D printing, it reinforces the idea that Apple is completely overhauling its approach to working with metal. The combination of material savings, maintaining structural rigidity, and greater freedom to redesign interiors seems to be setting the roadmap for the next generation of products.
For European consumers, already accustomed to changes such as the mandatory adoption of USB-C or new recycling regulations, it wouldn't be surprising if Apple used these new manufacturing processes for the aluminum chassis to reinforce its image as a company committed to the environment, while better adjusting its offering to broader 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 components like the USB-C port, the leap to aluminum chassis of the iPhone and Apple Watch It is shaping up to be the next logical step towards achieving more efficient, more robust and potentially more affordable devices without sacrificing the distinctive design that the brand has built over the last decade.
