Hargreaves explains the best way to use a hole saw. “Slow the drill as the diameter increases, keep the saw square, and clear dust regularly to avoid burning.” He adds, “Tape the face, clamp a backer, ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? To make a hole in masonry and rock, you need a masonry bit—and to know how to use it ...