This Pen Uses Conductive Ink ,We NEED something like this for 3Dprints. . Repost…

This Pen Uses Conductive Ink ,We NEED something like this for 3Dprints.
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Repost : Tokyo-based startup Kandenko has created a pen that conducts electricity on paper using a conductive silver ink. By simply Placing a LED light and a battery on paper and drawing a line to connect the two the lights come on as the silver ink conducts electricity between the LED and the battery.
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