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Creation of a bell mould

The coating removal process (clay template moulding process) that is used by good bell foundries today was developed in the 12th century and was further refined in the 14th century so that the bells would possess high musical quality. There is no better church bell manufacturing procedure, even if it is rather lengthy, and cheaper options have always been tried.

First, the core is bricked and the clay used on the clay bricks is turned with the template.

After the application of a separating layer of beef tallow, the manufacture of the false bell (model) is achieved in the same way, and inscriptions and decorations from wax models are applied to it after it has dried. Following this, the clay coating is manufactured – it must be stable enough to withstand the pressure of the metal in the casting. After it is dried, it is pulled up and the "false bell" is levered out. This creates the cavity that is to be poured into. After the refitting and accurate centring of the coating, the crown is positioned and the bell mould can be transported into the casting pit and prepared for casting. As the final step prior to casting, the casting pit is stamped out. The casting can then begin.

Prior to casting, the following statement is made: "In the name of God, we pour!". Bell pouring mostly takes place with a large element of involvement of the parishes for which the bells are intended.

Information on the history of the bell foundry and bell casting is available in our "Bell History" documentation (PDF file). In the "Of Bells and Bell-founders" documentation (PDF file) you will find things worth knowing about bell founding. The bell founding images can be found in our photo documentation .