Dating as far back as the early 1960’s, researchers were zapping tattoo inks with laser light was an effective way to remove the markings from human skin. At the time it was prohibitively expensive.

Most of the teams came up with similar ideas, but one team went above and beyond the call of duty; they turned a 3D printer into a tattoo machine, capable of inking a real, live human test subject.

Emily The Engineer's 3D printer-tattoo-machine mod emblazoning her friend Dan's leg with "leg". | Credit: Emily The Engineer on YouTube Earlier this week, YouTuber and hardware hacker Emily The ...

YouTuber Emily The Engineer may have developed a more cost-effective solution, however, as she's cracked open a 3D printer, bypassed its firmware, equipped it with a tattoo gun—and even found a ...