At a recent conference, two high-school teachers built a 3D printer and now have brought the technology back to their Michigan school, where it will be used to teach students. The teachers described constructing the device as a "learning process" and said they built the 3D printer as a team without step-by-step instructions. One teacher said she plans to use the device in her visual-imaging class, and the other said it also will be useful in making supplies for her science class and replacing items as needed throughout the year.

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