If you’ve ever tried to use a hand crank flashlight, you will know that they’re a) very cool but b) a real pain, because you need to keep cranking the handle until your arm drops off to get any decent amount of run time out of the LED bulbs. But now some very clever chap has come up with a superb 3D printed DIY solution.
Continue Reading »Tesla Torch – amazing DIY flashlight gives 1 min of light for every 1 second of hand cranking