Important Warnings - Sanders & Polishers 1. Eye protection, safety gloves and safety aprons must always we worn when operating a sander or polisher. 2. Never adjust the sander or polisher or change the backing pad, sanding disc, sanding belt or polishing bonnet unless the air supply and air hose is disconnected from the tool 3. Only use backing pads and polishing backing pads that have a rated speed then same as the sander or polisher or higher. 4.