A Shanghai building company has erected a small village of pitched-roof, 3-D printed structures—in about a day. WinSun Decoration Design Engineering Co is behind the series of humble buildings, a fully fabricated unit is expected to cost less than $5,000. The homes were created through the use of a 490- by 33- by 20-foot 3-D printer that fabricates the basic components required for assembly.
Rather than plastic, the machine behind these structures spits out layer upon layer of concrete made in part from recycled construction waste, industrial waste, and tailings. WinSun intends to construct 100 factories that will harness such waste in order to generate their affordable “ink,” which is also reinforced with glass fibers.
Purists will note that the WinSun productions are not 3-D printed structures in the traditional sense. Rather than projects like these, or the contour crafting processes championed by USC Professor Berokh Khoshnev, the Shanghai homes are not printed on site layer by layer. Instead they are composites of 3-D printed parts that require human intervention in order to be assembled into something resembling a house. WinSun estimates that their methods can cut construction costs in half and sees the potential for “affordable and dignified housing” for the impoverished.