Space Manufacturing

On Earth, we can make alloys. That's a homogenous metal mixture, like lemonade. In space, scientists hope that eliminating gravity will permit them to combine metals of differing weights at the molecular level. I have no idea what the applications are. Suggestions include lighter aviation parts. Here's what I do know - this is the first viable commercial use of space that I have seen. With projects like SpaceShipOne, here comes the revolution?