This invention describes a system for 3D printing buildings using a large, rotating arm. The arm moves on a circular track on the ground, and a sprayer attached to it applies building materials, like concrete, to construct structures. A sensor can help the sprayer adjust its output based on how far it is from the surface.
Why it matters: Construction 3D printing has matured significantly since 2015, with advancements in robotic control, material science for cementitious mixtures, and software for complex build paths. This makes the large-scale robotic system described more practical and efficient to implement.
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