The Next Big Thing: 3D Printing

We’ve mentioned this before, but the Economist has a piece on how 3D printing will revolutionize manufacturing in the next decade or so:

It works like this. First you call up a blueprint on your computer screen and tinker with its shape and colour where necessary. Then you press print. A machine nearby whirrs into life and builds up the object gradually, either by depositing material from a nozzle, or by selectively solidifying a thin layer of plastic or metal dust using tiny drops of glue or a tightly focused beam. Products are thus built up by progressively adding material, one layer at a time: hence the technology’s other name, additive manufacturing. Eventually the object in question—a spare part for your car, a lampshade, a violin—pops out. . . .

A technological change so profound will reset the economics of manufacturing. Some believe it will decentralise the business completely, reversing the urbanisation that accompanies industrialisation. There will be no need for factories, goes the logic, when every village has a fabricator that can produce items when needed. Up to a point, perhaps. But the economic and social benefits of cities (see article) go far beyond their ability to attract workers to man assembly lines. . . .

The article points out that a basic 3D printer can be purchased today for less than what one paid for a laser printer in 1985.  Pretty wild.

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