This section is from the book "Spons' Mechanics' Own Book: A Manual For Handicraftsmen And Amateurs", by Edward Spon. Also available from Amazon: Spons' Mechanics' Own Book.
For fixing the leaf on polished or japanned surfaces, the water size used as a ground should contain no spirit. The best fixative for the pattern is Brunswick black. A final coat of copal varnish over the gilding is desirable. By bronzing a portion of the ground (rubbing bronze powder on a coat of japanners' gold size and chrome yellow), and gilding all over, the bronzed part will exhibit dead gilding and the remainder bright.