Supply chained: Apple's sapphire production will be hard to copy

Then Steve Jobs discovered an appreciation for the metal, the unibody MacBook was born, and a chain reaction was set off that finds us now able to buy precision-milled aluminum hard drives, batteries, and even cameras. And is Apple about to repeat the feat with its latest investment in manufacturing, this time focused on sapphire glass? "We've been working super hard on trying to design some new unibody enclosures," Jony Ive announced in his usual understated fashion from the stage of Apple's Spotlight on Notebooks event. What Apple had done was take the machined-aluminum construction from the MacBook Air it had introduced a few months earlier and extended it to its mainstream MacBook and MacBook Pro laptop family.

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