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, ...

If you want to create perfectly round holes in wood, metal, or plastic, you’re going to need a hole saw. These cylindrical saws are powered by any corded or cordless drill, and their hollow shape ...