The Dupin Cyclide is a shape generated from sequences of spheres. In mathematical terms, cyclides are convex bodies of constant width. They can also be thought of as inversions of torus' , cylinders or double cones. I use stoneware clay to make this cyclide, to create a strong sculpture that is non porous. I decorate the surface with an underglaze made from ceramic stains. A glaze would stick to the kiln shelf as the sculpture has no flat base.