Using your Makita 714006-A bi-metal hole saw is easy. First, make sure you've attached it to a compatible Makita arbor like the 714060-B, 714061-B, or 714062-B with a 1/2' - 120 thread. Then, position it on the material you want to cut, whether it's wood or steel. Apply gentle pressure and start the drill. The 4/6 variable pitch teeth will help cut faster. Remember, this saw can make deep cuts through 2x4 material, so be careful when using it on thicker pieces. As for maintenance, after each use, clean the saw to remove any debris. You can use a brush for this. Store it in a dry place to prevent rusting. If the teeth start to look dull, it might be time to replace the saw. Also, always wear safety goggles and gloves when using the saw to protect yourself from any flying debris.