The Discovery Channel has aired a segment which gets behind the massive 3D printer D-Shape, designed by Italian inventor Enrico Dini and his company Monolite UK with the eventual aim of "printing buildings." The short film describes Dini's childhood obsession with building sandcastles, taking the viewer through the process of conceiving and designing D-Shape, which uses thin layers of bonded sand to build up its constructions.

The moment when Dini and his colleagues scrape away the excess sand to reveal the structure underneath — in this case, a sculpture destined for Vancouver — is extremely impressive, really showing the potential of what one interviewee describes as "the killer app for construction." Whether the machine will be able to graduate to building larger, more stable structures (and whether Dini will be able to get them past local building codes) remains to be seen.