Most powerful pencil sharpener

The most powerful pencil sharpener in the world is driven by a V12 670-horsepower Rolls Royce Centurion tank engine. It was created by Peter Svensson (Sweden). The sharpener is of the traditional rotary type from the 1950s. He restored the engine over the 1998/1999 winter. The pencil sharpener was then added and was fully-operational by the spring of 1999. The assembly is designed with a transmission so that the sharpener works at around normal speed when the engine is working at full power (around 2,500 rpm).