MIT researchers have developed a new 3D printing method that uses liquid metal to produce large-scale parts like table legs and chair frames in mere minutes. Called liquid metal printing (LMP), the technique involves depositing molten aluminum along a predefined path into a bed of tiny glass beads.
The aluminum then quickly hardens into a 3D structure and at speeds of at least 10 times faster than a comparable metal additive manufacturing process. Even more impressive is that the procedure to heat and melt the metal is more efficient than some other methods. One caveat: the method is not capable of achieving high resolutions, thus making it perfect for some architecture as well as construction applications.
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This is a completely different direction in how we think about metal manufacturing that has some huge advantages. It has downsides, too. But most of our built world — the things around us like tables, chairs, and buildings — doesn’t need extremely high resolution. Speed and scale, and also repeatability and energy consumption, are all important metrics,” said Skylar Tibbits, associate professor in the Department of Architecture and co-director of the Self-Assembly Lab.
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