[driftdiver]

Call me when the have nanobots which can build the thing from a a pile of metal dust.

[balch3]

that’s coming, too.

[Eye of Unk]

Well I do believe they have nanobots that can be inserted into a person and actually programmed to perform certain duties like artery cleaning, experimental stuff that doesn’t hit the news.
Its not beyond our current level of technology to create self replicating nanobots.

[thackney]

Each layer is then “printed” by training a laser beam on a bed of polyamide plastic, stainless steel or titanium powder.

This does metal as well as plastic.

[pyx]

Call me when the have nanobots which can build the thing from a a pile of metal dust.

The process called Voxel Fabbing AKA (VoxFab) describes how a "pile of metal dust" uses specifically selected nanospheres to build up layer upon layer until a final object is created.