Printing With Concrete: How I Spent My Summer Vacation

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Here, the printer is printing a carbon fiber-infused plastic mesh on a layer of cement paste. The mesh is laying down on the cement well and is not sticking to the nozzle, which is rare.

Since commercially available 3D printers came out a few years ago, their capabilities have radically expanded. At first, they could only print little things out of plastic, but now people have begun to print working cars and even bridges.

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