Here is a drone with a 3D printer inspired by wasps that can be used to build tall structures. These aerial vehicles deposit a cement like material to get the job done. The idea is to use a group of these to collectively to print buildings. The researchers use scanning drones that survey what has been so far to guide the printing drones to the right spot.
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3D printing with drones
Keeping drones in the right spot was also a challenge. Researchers built a print head that adjusts its position to compensate for the movement of the drone. The above video shows how it works.
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