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The technique of burnishing pottery can be traced back to ancient times. Burnishing involves no more than rubbing the clay surface with a smooth tool to produce a mirror-smooth surface. In reality it has a compressing effect on the clay particles. It can be done when the clay surface is leather hard and up until it is almost completely dry. Most clays are suitable for burnishing although the finer the clay the smoother the burnished surface. Suitable tools for burnishing include: Smooth rounded beach pebbles, The convex side of metal spoons and smooth knife handles. After the pot is smooth, draw your design with lead pencil then scratch around design with a knife. Designs can either be geometric or organic. Once the pot has been blackfired it can be left without further treatment or polished with oils to enhance the shine.