Cutting Out Drywall for Doorways
Just like when I hang drywall over a window, electrical box, or roughly opening a door, I don’t pre-cut. Most of the time I take a router and go along each edge and top, but thought I should introduce you to a drywall saw.
A drywall saw is not a saw that can be used to cut wood because it is very blunt, but it has a lot of teeth. I drive it up next to the bolt and it cuts on one push. When you pull back, you pull gently because you don’t want to tear the good face apart.
Instead of using the saw to cut along the top edge, I use a craft knife to go along the back and scratch along the underside of the door head. Then just fold it forward and start cutting.