Rough Tool is a term used to describe a tool with a coarse surface, such as a RASP. A RASP is a type of file used for shaping and smoothing wood or other materials. It has a series of sharp, coarse teeth that are used to remove material from the surface. The teeth are usually arranged in a cross-hatch pattern, which allows for more efficient removal of material. Rasping is a common technique used in woodworking and metalworking.