PURPOSE: To adjust optionally the degree of depth of an embossed pattern and to form the embossed pattern on a copper plate, by putting a blanking template consisting of a thin metallic plate on a base plate and superposing the copper plate on this template and press-beating the copper plate.

CONSTITUTION: After a blanking template 2 consisting of a thin metallic plate is put on a hard base plate 1, a copper plate 3 to be worked is superposed on the blanking template 2. The copper plate 3 is press-beaten from the upper face by a hammer which is made of an urethane resin and has the press-beating face formed hemispherically approximately, thus forming an embossed pattern on the surface of the copper plate 3 in accordance with the blanking pattern of the blanking template 2 consisting of the thin metallic plate. Plural stamping temlats 2 where blanking patterns 2a of the same size and the same form are formed are laminated concentrically to increase the depth of blanking patterns 2a.