If you had asked us yesterday “How do you 3D Print a Photo”, we would have said “well, that’s easy, do a lithophane”– but artist, hacker and man with a very relaxing voice [Wyatt Roy] has a much more ...

(a) Schematic of the multi-material one-step printing process, demonstrating the sequential switching of three different resin tanks during printing to achieve composite structures in a single step.