People on 9to5mac are highly skeptical. There's even an industrial designer that calls it B.S. :
Sun, 10/05/2008 - 18:17 computers for people who earnestly believe in feng shui.
This whole article sounds like it was written by someone without any knowledge, or even a basic conceptual understanding, of anything to do with manufacturing. It makes no sense for the contention that a "3D Laser" and water jet, carving a part out of a solid chunk of aluminium would cost less than using a traditional tool to press aluminium. Even cold forging would be cheaper than this. The cycle times involved would be absolutely astronomical for a the "3d laser and water jet" (I'm guessing a very conservative 5-10 minutes) compared to normal pressing (about 3-5 seconds). And besides, carving out of a solid chunk of aluminium would only form a cavity, which is NEVER seen by the user of the product (the cavity is where the electronics sit).
What I suspect is that there could potentially be a new process being used by Apple, though I don't believe the assertion that they "invented" it themselves, or it was what the author fumbled his way through trying to explain.
The link to the 3D laser milling process given by another poster(
http://www.manufacturelink.com.au/processes/laser-machining-3d-laser-mil...) has nothing to do with making mass produced products - it is only used to make CAVITIES for tools, NOT THE FINAL PRODUCT.
Now, to demolish all of the "Advantages" listed:
*Carving out of aluminum eliminates the need to bend the metal and create weak spots or microfolds and rifts.
>Casting does the same thing, and is much cheaper, faster, and will result in BETTER finish, and it doesnt "bend" the metal either. Pressing can also be used, and makes a good surface quality; used in car body panels. And to repeat, laser milling would only be practical to create a CAVITY, not the exterior.
*There are no seams in the final product, so it is smooth.
>This one is pure mac user logic. Any product that is made of aluminium, with electronics inside HAS TO HAVE at least one part line (what the author ignorantly calls "seams"). You can employ visual tricks to hide them, and make them all but invisible in some cases, but they still exist. You need at least two parts to form a cavity that can be assembled with the electronics inside, therefore there must be a part line.
*Screws arent needed to tie the products together.
>Nothing new here. The most commonly used manufacturing process for plastic parts, among others, injection moulding, can produce products with a massive variety of snap fit options where screws are not needed.
*The shell is one piece of metal so it is super light, super strong and super cheap.
>One piece of metal will not make the product any cheaper or lighter. It may make slightly tougher, as there is no part line, but I'm no engineer so I can't be %100 sure - FEA testing would be needed to verify your claim.
*You can be a whole lot more creative with the design if you don't have to machine it.
>As in industrial designer I can assure you that current processes allow for a massive range of styling options - this new method you have tried to explain doesn't really tell me enough to assess what its potential shaping benefits are.
Sorry for the long text!
