Akua Donkor, a Nafana potter, etches grooves onto the leather-hard surface of a clay cooking pot (sro chͻ in Nafaanra) before it is fired. The lower part of the jar has been surface treated using a maize cob (bledjukaan in Nafaanra) as a roulette. This gives the pot surface texture, over which the grooved design is made. She wears bracelets that sometimes double as tools to decorate pots. Dorbour, 1994.