"Making 3D printing truly 3D" article

It’s far from ready for production, but this looks like very cool future technology. Rather than stacking layers of resin, this new technology would use a dot of blue laser light shining in the middle of the resin to create a self-supporting structure.

“We designed the resin, we designed the system so that the red light does nothing…But that little dot of blue light triggers a chemical reaction that makes the resin harden and turn into plastic. Basically, what that means is you have this laser passing all the way through the system and only at that little blue do you get the polymerization…We just scan that blue dot around in three dimensions and anywhere that blue dot hits it polymerizes and you get your 3D printing.”