Building on the tried-and-trusted motor design of the extremely popular “Heidi” model, we were tasked with developing the very first tattoo machine on the market that could be operated without a power cable. One of the challenges we faced with the project was that the device had to stay light and balanced, despite the extra weight of the battery pack — and any serious product would also have to meet the same specs as medical technology.

We started by sitting in on several tattoo sessions, quizzing artists and watching their fingers to get a precise sense for what they needed when using their machines. Our observations allowed us to optimize and double-check performance parameters, components, layout, build and ergonomics with a series of refined functional prototypes. We eventually constructed a mass-producible device featuring two AAA rechargeable batteries, a precision maxon RE 13 motor and a chassis machined from sections of extruded aluminum and injection-molded parts that weighs only 20g more than its power-corded predecessor. In creating a look appropriate for such an innovation, our design stands in stark contrast to the ornamental retro styling of the competition: the unchained’s design evokes high-end motorcycles and futuristic jets — stealth aircraft design for cutting-edge technology.