Using your DeWalt DAH3138 hole saw is easy. First, make sure you've chosen the right material to cut, like wood with nails, thick metal, or stainless steel. Attach the hole saw to your power tool and start cutting at a steady pace. As you cut, the aggressive tooth design will help penetrate the hard metal and remove chips efficiently, so you don't have to worry about too much heat building up. When you're done cutting, use the large, continuous slot to easily remove the plug. As for maintenance, after each use, wipe down the hole saw to remove any debris. Store it in a dry place to prevent rust. Also, be careful when handling the carbide tips as they can be sharp. If you notice the cutting edge wearing down, it might be time to replace the hole saw.
