A cutter for simultaneously severing opposed sides of a drywall panel. The inventive device includes a guide assembly for sliding along an exposed edge of a drywall panel. Support columns project from the guide assembly for positioning along respectively opposed front and rear faces of the panel. Cutting...http://www.google.se/patents/US5600892?utm_source=gb-gplus-sharePatent US5600892 - Dual side drywall panel cutter
