fire gilding
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noun
a process of gilding metalwork in which the metal base is coated with an amalgam of gold and mercury, the latter subsequently being driven off by heat.
Origin of fire gilding
First recorded in 1825–35
Also called amalgam gilding.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for amalgam gilding
Historical Examples of amalgam gilding
To gild brass, copper, &c., in the common process of wash or fire-gilding.