After casting, the mold should cool for a week or more if the bell is large. It is then broken in order to release the crude bell, which has a gray and black appearance and is polished with a wire brush. The clapper is then fixed on the inside in a precise position so as not to strike in the wrong place and crack the bell. Its weight is about a twentieth of that of the bell. The open mold presented at the Fonderie Cornille-Havard is an old one displayed for visitors.