Use A Router To Cut Drywall
Cut the holes for doors, windows, and electrical boxes fast and accurately
Hang the drywall over the holes, then cut them out. Use a small router fitted with a special chuck and bit available at most hardware stores. In this video, Pat Carrasco, a Bozeman, Montana, freelance writer and drywall hanger, demonstrates the procedure. It’s simple, and you don’t have to make a lot of measurements so it saves time, too.
To learn more from Pat, read his article Solo Drywall Hanging.