additive manufacturing
Many traditional manufacturing processes, like CNC, start with a block of some material, and remove parts of it via a range of different processes to arrive at the finished part. Additive manufacturing, including 3D printing, takes the other approach, adding material to create the finished part.
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Arizona company Rosotics says it's ready to revolutionize large-scale 3D metal printing, with a new "rapid induction printing" approach that can print parts of enormous size – with radical advantages in speed, cost, safety and energy efficiency.