![]() Technologists developed the process, known more officially as additive manufacturing, as an alternative to other industrial manufacturing techniques, like extrusion and casting, and it has proven to be an effective, efficient way to make especially complex mechanical parts like wind turbines.īut conventional buildings are not made by extrusion or casting or any other single manufacturing process they are accretions of dozens of different techniques from cast-and-pour concrete to spot-welded steel extrusions to laminated glass. photo courtesy Emerging ObjectsģD printing has been around since the 1980s. ![]() Saltygloo by Emerging Objects, Berkeley, Calif.
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