By George Day
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Additional resources for Decorative Metal Work - A Pracrical Handbook In Iron, Brass, Zink, & Copper
44, although a grille, is somewhat different to the preceding, as this is intended for the top part of a front door or window having a, piece of clear glass, The outside frame should be of stout iron-about one sixteenth of an inch thick by one quarter of an inch wide. Bend this at the corners so that it will fit inside the style of the door or window in which it is to be placed. Allow it to be a sixteenth of an inch smaller all round than the style, so as to make room for the bits of iron that will wrap round it at intervals which are necessary to hold in place.
In order to suspend the lamp in position, procure or make a chain and attach to it a strong iron book, such as one as will support the weight of the lantern. This makes a very useful as well as ornamental article for any entrance-hall. Chapter Seven. Brass Colouring and Lacquering. This is a metal surface coloured by lacquer or chemical action. To obtain the various colours several methods are known and practised. Browns of all shades may be obtained by immersing in a solution of nitrate or perchloride of iron; the strength of the solution will determine the depth of the shade.
A good varnish used for brass in its simple form and small quantity is one ounce of shellac dissolved in one pint of methylated spirits of wine; to this simple formula is added such colouring matter as may he desired. Lacquer suffers a chemical change by heat and light, and must therefore be kept in a cool place and in dark-coloured vessels, such as glass or earthenware, and the brushes used should be of camel's hair with no metal fittings. CHAPTER EIGHT: TO ETCH ON METALS. ETCHING is engraving executed by a pointed tool and acid upon a metallic surface previously coated with varnish.