3D printing began with plastic as the printing material, but printing material types have expanded dramatically in recent years as different sectors experiment with different 3D printing techniques. Buildings can now be printed in concrete – either in experimental form by the TU Eindhoven, or by Gtecz via a powder, or by Chinese company Winsun on a large, commercial scale. Other developments include filaments that look like wood, bamboo or metal by Colorfabb, printing in chocolate and sugar with the ChefJet from 3D Systems, printed ceramic elements from ElStudio and printed glass developments from Mediated Matter of MIT. Furthermore, the techniques and quality of printing with metal are also rapidly improving. Actually, almost everything can now be printed, be it from a powder, extruded paste and so on. From cheese to salt, whether printing on the earth or printing on the moon with moondust, it is an exciting and challenging time in the world of 3d printing.