Joris Laarman Studio's prototype software instructs a robotic arm, which debuted at Fabricate2014 in Zurich earlier this month, to recreate 3D models in midair, using molten metals of all kinds. It looks as cool as it sounds.
Laarman's studio, you might remember, unveiled a version of this machine last year that could print resin. But metal was a significantly taller order. What's going on here, essentially, is high-speed welding in midair. This prototype can print steel, stainless steel, aluminium, bronze or copper, each of which comes out red-hot but fuses solid within a few minutes of cooling. The team calls it "anti-gravity additive manufacturing." [Joris Laarman Studio]