If the templates for the inside and outside of the bell are now laser-cut in metal, the shaping of the fake bell is entirely done by hand at the discretion of the craftsman. Years of experience are necessary to achieve the right gesture as the thickness of the bell also determines its note. Once the bell is melted, the tuner can remove material to lower the note. Cornille-Havard workers have acquired dexterity and know-how that have made the foundry famous worldwide.