A new way to build homes

3-D printing could revolutionize building a house by making the process cheaper and more customizable.

On a recent Saturday afternoon, Jiang Shaofeng polishes a gypsum window frame in the open air of a factory in Suzhou Industrial Park, Jiangsu province. He uses a yellow, gluey material to fix the small holes and cracks on the surface of the frame.

The window frame was produced by Yingchuang New Materials (Suzhou) using 3-D printing technology. After it's polished, the surface of the frame will be as shiny as the body of a brand new car, Jiang says. The part will be shipped to Dubai for a customer to examine.