Apple 3D Prints Titanium Watches Using Laser Technology
â–¼ Summary
– The Apple Watch Ultra 3 and Series 11 are made with 100% recycled titanium powder and are 3D-printed, though they look similar to the Ultra 2.
– 3D printing reduces waste by cutting raw materials usage for watch cases in half but presents challenges like balancing speed and precision.
– Apple’s process involves blasting titanium dust with a laser to build over 900 layers, each 60 microns thick, for a single watch case.
– The titanium powder is fine-tuned to lower oxygen content to prevent explosions when exposed to high heat during manufacturing.
– This 3D-printing method saved an estimated 400 metric tons of raw titanium this year and is also used for the iPhone Air’s USB-C port, with potential for broader application.
At first glance, the Apple Watch Ultra 3 appears nearly identical to its predecessor, yet beneath the surface lies a revolutionary shift in how it’s manufactured. Both the titanium Apple Watch Series 11 and Ultra 3 are now produced using 100 percent recycled titanium powder and are entirely 3D-printed, marking a significant advancement in sustainable production at Apple’s massive scale. This innovative approach drastically cuts down on material waste, reducing the raw titanium required for each watch case by half, though it introduces its own set of engineering hurdles, particularly in maintaining a careful balance between manufacturing speed and precision.
Apple has provided deeper insight into its manufacturing technique, which relies on a sophisticated process of fusing fine titanium dust layer by layer using powerful lasers. Each individual watch case is built up from more than 900 successive layers of material, with every layer measuring a remarkably thin 60 microns. To put that into perspective, a single micron is one-thousandth of a millimeter. Special attention is given to the titanium powder itself, which must be meticulously refined to lower its oxygen content. This crucial step prevents the highly reactive material from posing any combustion risk when subjected to the intense heat of the laser during printing.
By adopting this additive manufacturing method for its watch cases instead of traditional machining that carves away material, Apple has achieved substantial resource savings. The company estimates this switch has conserved approximately 400 metric tons of raw titanium in the current year alone. The application of this 3D-printing technology isn’t limited to wearables; Apple has also utilized the same process for components like the USB-C port on the iPhone Air. While fabricating an entire iPhone chassis through 3D printing remains a future possibility, the company’s strategic direction suggests it is actively exploring broader applications. As Sarah Chandler, Apple’s Vice President of Environment and Supply Chain Innovation, emphasized in a recent statement, the company’s philosophy is to implement new methods with the intention of making them standard practice across its entire production ecosystem.
(Source: The Verge)
