Guidelines for Successful Hole Saw Operation

The pilot drill must extend beyond the edge of the hole saw teeth by 1/8".
Always secure the material to be cut. If not, the turning action of the hole saw will cause the workpiece to spin or slip.
Start the hole saw square to the workpiece surface with steady feed pressure. Unbalanced tooth engagement will result in erratic hole saw action and could cause tooth strippage.
Follow the recommended standard hole saw operating speeds.
Hole saws should be worked in and out to help clear chips when working at the upper ranges of the hole saw's capacity.
Whenever possible, use a cutting oil (except with cast iron or wood) to help clear chips and lubricate the blade for longer life.
Occasionally check the mandrel's drive pins to prevent them from vibrating out of the hole saw's drive pin holes.
Always wear eye protection.