The Mills
 ” En el año 1731 se construyó otro nuevo molino para moler los vernices y colores igual e inmediato al que ya abía, y los dos muelen con ocho muelas”
(Factory documentation. Castellón Municipal History Archive).

In addition to seven water-powered flour mills, Alcora had several other mills that were used to grind raw materials for pottery making: clays, glazes and ceramic pigments.

Among them, the ingenious water mills at the Royal Factory are particularly worthy of mention. Two mills are known to have existed, each with four millstones driven by a waterwheel whose mill race was fed by the town’s main irrigation channel, which in turn received water from Alcora reservoir, close to the hamlet of Foia.

The Royal Factory also had two mule-driven mills, very probably to grind clays before they were put in settling tanks.

We are now in the area formerly occupied by the “Molí Vernís”, also known as the “Molí Nou de Custodio”. In addition to these millstones, some underground parts of the mill still exist below this square.

The glaze and pigments mill

The glazes used on pottery are made of a mixture of silica, alumina and a flux. The silica used in the Royal Factory’s glazes was usually made of sand or glass and the flux from different lead compounds. Ceramic pigments were used to paint decorative patterns and to colour the glazes. The compounds used in the mixes were usually calcined and ground so that they were as uniform as possible.
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