The thin layer of metal foil that originally covered the vessels imparted a luminous sheen, still discernible today in traces.

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The brushed metal case with protective layer provides 9H scratch resistance, which prevents damage even after long-term use.

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Either high or low ph environments will strip the anodising (what is effectively a layer of aluminium oxide) from the underlying metal.

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Using a long metal icing spatula, cover the layer generously with frosting.

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Behind a tinted glass panel 18-carat gold powder, laid down by a robot arm, sparkles as a laser fuses the metal into complex three-dimensional shapes, layer by layer.

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Everything was covered with a thick layer of grime, from the old fashioned metal light fittings to door handles and banisters.

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Though its Blu-Ray machines have been its biggest money maker, the German technology company has thus diversified into other areas, where it can replicate its expertise for metalization, i.e. the process of coating plastic with a thin layer of metal.

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