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If you’ve ever wondered how 3D printers are made, the answer is surprisingly meta.

As this clip from the Science Channel shows, a fair amount of 3D printer parts are actually 3D printed.

At the facility shown here, rows and rows of 3D printers are kept constantly churning out parts for new 3D printers—which is very efficient, even if eerily reminiscent of a robot sweatshop.

To read more and view the video, click here.
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