There's quite a few processes that allow the production of metal parts. The big advantage comes when you produce titanium parts using Selective Laser Sintering.

There's quite a few processes that allow the production of metal parts. The big advantage comes when you produce titanium parts using Selective Laser Sintering. Titanium is very hard to machine using traditional processes, and the waste produced means it's very expensive. SLS deals with both of those issues. The principal downsides right now are inconsistencies in material properties and surface finish. It will be interesting to see if we can solve those problems.