A metal polisher works in the manufacturing industry to finish metallic surfaces, removing contamination and defects. As a metal polisher, your job duties include using machinery and abrasive tools, such as wheels, hot blackeners, vibratory finishers, and dryers. You use these to buff and finish metals like aluminum, brass, copper, and stainless steel. The qualifications for a career as a metal polisher vary depending on your employer and the types of metals and machinery you work with. You need at least a high school diploma or GED, and some jobs require technical certifications or a bachelor’s degree in machine tool technology. Previous experience and skills working with manufacturing is helpful.