[Cushman]

Um, but metal doesn't just freeze, right? There's a stage of plasticity while it cools during which you could feasibly sculpt with it.

Not saying it would necessarily be cost-effective, but it's an interesting idea.

[keenerd]

Hey, you were the one who said molten :-)

I guess you meant something more like blacksmithing. Chamber could add heat by microwave induction. No air to oxidize the surface so you might be able to work trickier metals. We already have power hammers, we already have 6DOF manipulation tables. I'm not entirely convinced that a power hammer could do the work accurately enough, might want to use a milling machine for the final fitting.