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.

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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. 2018

Examples from the Web for amalgam gilding

Historical Examples

To gild brass, copper, &c., in the common process of wash or fire-gilding.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I
Arnold Cooley