What is a drywall rasp?

A drywall rasp is a tool used to smooth or shape cut edges and trim excess material when hanging sheets of drywall. A drywall rasp typically consists of metal teeth attached to a wooden or plastic block. Some models feature a molded grip for better control.

Drywall rasps, which measure 5 to 7 inches in length by 2 to 4 inches in width, are designed to fit into small spaces, such as notches or cutouts for electrical access. The shape of the teeth varies by manufacturer. Some are made with perforated metal, which resembles the surface of a microplane grater, while others are made from a sheet of expanded metal in the form of a grid. There are a number of different types of drywall rasps available for purchase at Amazon.com.