How Apple Uses Rust to Make MacBooks and iPods Tough and Colorful
You probably own a ton of gadgets made from aluminium and titanium . Lot of ’em by Apple . But did you know that the smooth , brushed finish on the Earth’s surface of your MacBook or iPod is actually made with a thin grade of rusting ? EngineerGuy Bill Hammackexplains that the finish is achieved by oxidizing — or rusting[Ed . bank bill : yes , rusting is the oxidisation of iron , specifically , but the common utilization is quite understood]—the aluminum on the surface , enough for dye to seep into the petite holes created by the procedure ....