Using the Makita HB350 is easy. First, make sure you have all the included items like the coolant bottle, safety strap, and tools. Attach the appropriate 3/4 - inch Weldon Shank cutter to the industrial chuck. Place the drill on the steel surface and use the magnetic base to secure it firmly. Adjust the motor height according to the thickness of the steel you're drilling. Turn on the drill using the simple three - button control panel. The spindle coolant system helps with cutting, so fill the removable reservoir with coolant and connect the hose. During operation, keep the area clear and wear appropriate safety gear. When you're done, turn off the drill, remove the feed handles for easy storage, and put the drill in the tool case. For maintenance, clean the drill regularly, especially the cutting mechanism and the magnetic base. Check the coolant level before each use and replace it when needed. Also, inspect the chuck and the motor for any signs of wear or damage.