Jello 3D Printer (2013)
This is so cool! And it's from 2013, thats amazing. A very similar printing method is being explored by MIT's Self Assembly lab, I think they first published in 2017 - https://selfassemblylab.mit.edu/rapid-liquid-printing  https://www.liebertpub.com/doi/full/10.1089/3dp.2017.0037