Bessey Super Nibbler is designed to trim light gauge sheet metal, aluminum, brass and plastic parts easily up to 19 gauge, 3/64-Inch. Openings in panels can made by drilling a small hole in the panel so that the nibbler jaw has operating clearance, (3/8-Inch - 1/2-Inch hole diameter) and then the desired opening can be created by nibbling material away in the panel. Bessey Super Nibbler can also be used to cut slots in sheet metal for fabricating parts.