Embossing and Die Sinking
Embossing means to raise a figure, or design, above the flat surface of sheet stock. In operation the best results are obtained from the blow by attaching the force, or punch, or male member of the die to the hammer of a drop press.
There are three methods of making embossing dies, and to employ any of the methods the workman must be an artist, for the outline of the design must be transferred from a sketch or possibly from a sample to the face of the die - if the design is of a floral or landscape effect, it means freehand sketching to obtain the desired outlines on the die face. Embossing dies proper, as well as drop-forging dies, are distinctly apart from the work expected of tool-makers or blanking die-makers, and embossing die-makers are known as die-sinkers.
The third method is to cut the design directly in face of the die block. To do this the die-sinker must cut the design the reverse of that desired, which is the most difficult method. Wax is used to obtain the impression. The surface of the die block or impression is smoked with a match to prevent the wax sticking and when the wax is forced into the impression in the die the wax shows the design and is the die-sinker's guide. The force or punch is made by shaping its end to practically the same outline as the depression in the die, and by forcing it cold into the die by hydraulic pressure, or the die may be fastened to the bed of a drop press and the force Attached to the hammer and forced into the die, either hot or cold.
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