I wonder how many of those metal lathes were originally bankrolled by Apple's billions, as a part of their organization plan to help suppliers build capacity.
Well, I am suspicious about an article that talks about lathes with regard to making Macbook parts. A Lathe is a machine on which parts are spun at great speed. It is good for making things like the legs of tables, etc.
Apple's unibody technology uses CNC machines which are more appropriately called mills. They are not that uncommon, and are widely available to everybody... and have been for years. Maybe Apple uses machines from a particular segment of the market that has dried up supply, but it is rare that a company has too much demand for a product and isn't interested in building more.
EG: There's no evidence Apple has cornered the market on CNC machines, which can come from a wide variety of companies.
However, companies like Foxconn, do invest billions in buying large quantities of such tools and then dedicate them to manufacturing apple products, because Apple's specifications require them to do so. (This from an article I read interviewing Foxcon's founder.) The Band on the iPhone 4 required 1,000 custom metal machines, for instance. No doubt many of those billions invested in those machines come from Apple.
