A rotary polisher is a power tool used for polishing and buffing surfaces, primarily in automotive detailing and woodworking. It operates by spinning a polishing pad in a circular motion, which helps to remove imperfections, scratches, and oxidation from surfaces. This tool is effective for achieving a high-gloss finish on materials like paint, metal, and plastic. These polishers come in various sizes and power levels, making them suitable for both professional and DIY use. Users can attach different types of pads and compounds to achieve specific results, such as cutting, polishing, or finishing. Proper technique and safety precautions are essential when using a rotary polisher to avoid damage to surfaces or injury.