Damascening is the application of gold or silver on iron or steel to produce a decorative pattern. Around the XV century it became popular in Europe, and at present, the art work produced in Toledo, Spain, is famous all over the world. The procedure used by the artisans is to cover the surface of the object lengthwise and across fine, narrow grooves, by means of sharp steel cutting tools. Then gold threats or fine wires are taken and the decorative pattern drawn, the wire being pressed into grooves by means of a steel punch. In order that the gold is perfectly retained, it is hammered in with a small punch and a hammer. Afterwards the part is blued using the same procedure as employed for blueing firearms.