If you're a fan of bizarre 3D-printing projects , you'll love this story about an electric-powered plane that flies with tissue paper wings. Degreed aerospace engineer Tom Stanton wanted to create a 3D-printed plane that could be hand-cranked for prolonged gliding. He was inspired by traditional wind-up planes that use wound-up rubber bands to spin the propeller. In a similar way, Stanton's plane uses a supercapacitor that he charges with a hand-cranked generator in just four seconds. While old-school toy planes are typically made of balsa wood, Stanton used 3D-printed plastic so he could get his prototype in the air as soon as possible. The plane's frame was printed directly onto tissue paper to create the wings, and a carbon fiber rod secured the wings to the plane's body. Stanton needed a lightweight supercapacitor to hold an electric charge, so he went with a 2.7-volt capacitor with a 10-farad capacitance, weighing just 3.2 grams.…