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How to Print a House – 3D Printing [VID]

3D printers build 3-dimensional objects by spreading layers of supported materials over movable control surfaces. Current models can use a variety of materials, including metals, and can include colors in printed objects.

Looking into the future: imagine being able to 'print' an entire house or building. A system for doing just that with concrete is being developed by the Massachusetts Institute of Technology. The technique could make it possible to create fanciful, organic-looking shapes that would be difficult or impossible using molds. It could also allow the properties of the concrete itself to vary continuously, producing structures that are both lighter and stronger than conventional concrete!