Using the DeWalt DW4907 wire wheel is quite straightforward. First, make sure your bench grinder is turned off and unplugged. Then, attach the 8 - inch wire wheel to the grinder using the 5/8 - inch arbor. Once it's securely in place, you can plug in the grinder and turn it on. Use the wheel to remove heavy materials from ferrous metal surfaces. When using it, keep your hands steady and maintain a consistent pressure. As for safety, always wear safety goggles and gloves to protect yourself from flying debris. Never use the wheel if it's damaged. For maintenance, after each use, turn off the grinder and let the wheel cool down. You can clean it with a wire brush to remove any debris. Store it in a dry place to prevent rusting. This way, your DeWalt DW4907 wire wheel will serve you well for a long time.