As someone who's built/designed multiple metal 3D printers before, this actually looks really cool. Every metal 3D printer requires high temperatures, inert and reducing gasses to prevent oxidation, and most of them require powdered metal, whether for something like DMLS or powder bed technologies. The accuracy is also impressive.

One of the ancillary ideas that I and a few others came up with in exploring binder jetting was 3D organ printing because the feature size is quite small. I wonder if there's a world where you could use an analogous process on a solution of individual cells.