3D printing, or additive manufacturing technology, has seen incredible progress in recent years, and is having a huge impact on fields ranging from dentistry and architecture to aerospace and medicine. In our lab, we believe that 3D printing provides a phenomenal opportunity for (photo)electrochemical engineers to rapidly develop and demonstrate new electrochemical reactor concepts. 3D printing is not only useful in the laboratory setting, but also represents a potentially low-cost, new paradigm for manufacture of energy conversion technologies such as fuel cells and electrolyzers.
We make the design files created by our group and used for publication freely available for those who wish to reproduce and (hopefully!) improve our designs at the following website:
http://echem.io/AM_design_files
3D Printing Resources and Videos:
[1] Solar 3D printer: https://www.youtube.com/watch?v=6ajzOaauYa4
[2] 3D printer in space: https://www.youtube.com/watch?v=Uy11alCPe60
[3] High speed 3D printing: https://www.youtube.com/watch?v=l3TgmvV2ElQ (inspired by the Terminator)
Esposito Research Group 
Elevating design possibilities with 3D magic. [https://www.3ddrucklife.de/en]