Drive to be the coolest puts PCs on cutting edge Kawika Uechi of Cambridge hacks computers, literally. His favorite tool is an electric rotary handsaw made by Dremel, with a blade that slices neatly through the thin metal of a computer case. But when he was a student at the Massachusetts Institute of Technology, Uechi also used the school's water-jet cutter, a supersonic water pistol that can rip through hardened ...