Using the DeWalt DWA7745 saw blade is a breeze. First, make sure your saw is turned off and unplugged. Then, install the blade on the saw using the 1 - inch arbor. When you're ready to cut, start the saw and let it reach full speed before making contact with the light gauge ferrous metal. Move the metal steadily through the blade for a clean cut. As for maintenance, after each use, wipe the blade clean to remove any metal shavings or debris. You can use a soft cloth and a bit of mild cleaner. Store the blade in a dry place to prevent rust. Also, be careful not to drop or damage the blade, as this can affect its performance. If you notice the blade is not cutting as well as it used to, it might be time to replace it.