I'm really amazed they can retain the phase of the material this way. When I learned about annealing different forms of steel in college materials class, I thou

I'm really amazed they can retain the phase of the material this way. When I learned about annealing different forms of steel in college materials class, I thought the entire object had to participate in the phase change. The fact they can preserve the structure not only at each 2D layer, but also at the junction of those layers in the 3rd-D really blows my mind. It's like the whole game of different steel phases is up for re-analysis when produced this way. This is the future. We aren't even remotely close to scaling up and optimizing this kind of manufacturing.