Meet the “un-knitting” machine, a pedal-powered apparatus designed to recycle unwanted knitwear. This mysterious device is the brainchild of Imogen Hedges, a London-based product-and-furniture designer who found the process of unraveling sweaters by hand to be a most time-consuming one indeed. It’s built around an old bicycle frame and it works sort of like our favorite bipedal vehicle. The “un-knitter” sits on a chair on one end, unraveling the garment as it’s pulled along the circumference of the wheel. Pretty soon, voila, you got yourself a heap of usable fabric. It even gets rewound into a ball for easy knitting.