The Art Of Bronzing
Bronzing is that process by which figures of plaster-of-paris, wood,
&c. are made to have the appearance of copper or brass. The method is
as follows:
Dissolve copper filings in aqua fortis. When the copper has
impregnated the acid, pour off the solution, and put into it some
pieces of iron, or iron filings. The effect of this will be to sink
the powder to the bottom of the acid. Pour off the liquor, and wash
the powder in successive quantities of fresh water. When the powder is
dry, it is to be rubbed on the figure with a soft cloth, or piece of
leather; but observe, that previously to the application of the bronze
powder, a dark blackish sort of green is first to be laid on the
figure: and if you wish the powder to adhere stronger, mix it with
gum-water, lay it on like paint, with a camels'-hair brush, or
previously trace the parts to be bronzed with gold size, and when
nearly dry, rub the powder over it.
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