Explosive embossed mold surface

Explosive Embossing of Mold Surfaces for Structure Transfer... 

Explosive embossing is an intriguing process which allows the imprinting of even relatively soft materials, with almost any stracture, into metals. The structural template, for example a wood veneer or a holographic stmcmral template, is placed on the mold surface and then transferred into the metal by a strong impulse from an explosive (Figs. 30 and 31). 

Fig. 31 Mold plate with wood veneer embossing (left) and explosively embossed steel mold insert with holographic surface stmctures (right)...

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