The term 'Pottery Protector' is a job description for someone who applies ENAMEL to pottery. ENAMEL is a type of glass-like coating that is applied to pottery to protect it from damage and wear. It is usually made from a combination of silica, borax, and other minerals. The ENAMEL is heated and then applied to the pottery in order to create a protective layer. This layer helps to prevent the pottery from cracking, chipping, or fading over time.