Amazing advancements have been made in 3D-printing technology, but designer Sebastian Bertram has taken it a step further, expanding the capabilities of 3D printing to large-scale 3D building. The Contour Crafter aims to keep up with demand for housing in urban areas with a construction method that combines industrial production and the technique of rapid prototyping. The robot “prints” contours of a building shell layer by layer using fast-drying concrete. Within just a couple of weeks, an entire estate could be produced.