Using the DeWalt DAH4138 hole saw is quite straightforward. First, make sure your drill is set to the appropriate speed for the material you're cutting. For thick metals, a slower speed is usually better. Place the hole saw on the material where you want to make the hole and start the drill. As you're cutting, the aggressive tooth design will help penetrate the material and remove chips. When you're done cutting, use the multiple leverage points provided by the large, continuous slot to easily remove the plug. When using this hole saw, always wear safety goggles to protect your eyes from flying chips. Also, be careful when handling the sharp carbide - tipped cutting edge. For maintenance, after each use, clean the hole saw with a brush to remove any chips or debris. You can also wipe it down with a clean cloth. Store it in a dry place to prevent rusting. This way, your DeWalt DAH4138 hole saw will last a long time and keep performing well.
