The portions of ironwork that have been turned or fitted, and all tooled surfaces, should be protected by a coating of tallow, mixed with white lead to prevent it from easily melting and running off the metal.
"Dr. Percy recommends for the same purpose common rosin melted with a little Gallipoli oil and spirits of turpentine. The proportions, which may easily be found by trial, should be such as will make it adhere firmly and not chip off, and yet admit of being easily detached by cautious scraping."2
(Hiding has to be done with special care, or the gold will be destroyed by rust. The surface of the iron, having been very carefully cleaned, is painted with two coats of iron oxide paint, then with two coats of lead paint of light colour as a basis for the "oil gold size" upon which the gold leaf is placed. When properly done the gilding will last fifteen or twenty years.3