Oh that's a wild guess based on the stream of [something] going from the star to the Forge. I wouldn't even call it a conjecture, since we'll almost certainly never find out.
It's probably using the energy and matter from the star and using the... Dark Side, somehow, to form in to the necessary metals and gases.
Death Star wins though.
__________________ Recently Produced and Distributed Young but High-Ranking Political Figure of Royal Ancestry within the Modern American Town Affectionately Referred To as Bel-Air.
All the specific metals and alloys necessary for capital ships and starfighters are just sitting there on the top of the star waiting to be sucked up? That is one b*tchin star.
__________________ Recently Produced and Distributed Young but High-Ranking Political Figure of Royal Ancestry within the Modern American Town Affectionately Referred To as Bel-Air.
The Death Star was a ground zero of a planet exploding and jack all was done to it. The Death Star novel mentioned mountain chunks impacting it's shields