Cloisonné

Cloisonné enamelling is a technique whereby the pattern is outlined using flat metal wires laid on the surface to be enamelled. The enamel is placed in these partitions and fired. After polishing, the wires bring out the design inlaid in the enamel. The word "cloisonné" is also used as a noun: "cloisonnÈ". Cloisonné enamels are now made industrially by treating with acid a copper plate covered with a sensitive film on which the design is outlined. The acid eats into the copper, leaving the metal intact under the lines.