The series of vases Y 01 shows the beauty of the material bronze in all its facets. The fascination lays in the great contrast between the bright shining inside and the rough, matt outside of a vase. The products make the whole manufacturing process of casting bronze visible. The outside shows the material in an untreated condition. The oxidation made the bronze turn black. The inside is highly polished and went golden. The shapes and sizes of the three vases are related to shapes of glass jars used in the chemistry. Showing different steps of bronze treatment in one product gives the traditonal manufacturing process of casting bronze a new freshness.