LLNL's holography-based volumetric 3D printing makes 3D objects in seconds, no layering required

With the help of academic collaborators, researchers at Lawrence Livermore National Laboratory (LLNL) are using hologram-like 3D images projected into photosensitive resin to 3D print complex parts in a very short time. The volumetric 3D printing process prints objects all at once, rather than layer by layer.

from 3ders.org - http://www.3ders.org