The Small Shredder is an indispensable tool for shaping and carving leather-hard clay. For years, tools like this were available at hardware stores. This type of rasp was originally designed to be used on wood, but then potters, sculptors, and auto-body repairmen discovered how well the blade worked with other materials, like clay and auto-body filler. The problem with these rasps was the handle design - the handle would trap clay and get clogged.