* To make round cutouts, measure to the center of the object, then transfer the centerpoint to the drywall panel. Use a compass set to half the diameter of the cutout to mark the
circle on the panel face.
* Force the pointed end of a drywall saw through the panel from the face side, then saw along the marked line. (These saws work well for all internal cuts.)
* Variation: Drive the point of a drywall compass into the center marking, then rotate the compass wheel to cut the face paper. Tap a nail through the centerpoint, score the back
paper, then knock out the hole through the face.
