The round end will be found very useful in working from the inside of the pattern, which will be explained hereafter. The punches are of various forms; but a set of common board nails of different sizes, and varying shaped ends, make good tools for beginners. A very nice piece of work can be done with a common French nail whose end has been ground flat.
It is desirable that a beginner should practice upon the thinnest sheet-brass until he becomes perfectly acquainted with the use of his tools. Brass can be obtained for about twenty-five cents a pound, and one-quarter of a pound of No. 25 will be amply sufficient for this practice.
A tool which is of great assistance in all brass work is a dull chisel or screw-driver, with a serrated edge, so that a dotted line is left when it is pressed upon the metal; however, if this is not readily procurable, a common screw-driver will answer the same purpose in most instances. In this practice, the first thing to be done is to draw a line of some design upon the brass with a soft lead-pencil or with impression-paper, taking extreme care that this line is precisely like that in the copy, as all irregularities should be corrected in the drawing, and none left for the punch. It is, indeed, very difficult to make the proper corrections after the work is commenced. Then having traced your line as perfectly as you can do it, lay the brass upon a piece of soft wood, and with the end of the screw-driver pressed evenly upon the line, give the head a light blow with the hammer; then move the blade along the penciled line, so that its edge shall just touch the end of the last indentation, and give it another slight tap with the hammer. If you strike with too much force your line will be unequally deep in some places, and your work will not present as good an appearance when finished. This process should be repeated along the entire design, and a perfect unbroken line should be the result. Until this is accomplished it is best to attempt nothing further. After you have succeeded in making one unbroken even line, mark two parallel lines upon the metal, and do them in the same manner. When these present a satisfactory appearance, trace some very simple design upon the same thin sheet, and after nailing the sheet at each corner to the block, commence with the chisel and mark lightly around the figure. It is often necessary to do this tracing over two or three times during the process of working, as too deep denting at first warps, or, as the regular brass-worker would say, “buckles” your pattern. Now commence at the outside edge of your design, with your nail placed near the line, strike upon it with a light blow, and continue this operation until your whole background is covered with little dents, and presents a thickly mottled appearance. When this is removed from the block, the pattern will seem to stand out from the rest of the surface.
Care must be taken at first not to crack or break holes in the brass, but after a little practice, and a thicker quality of brass is used, you will learn to avoid this danger.
PLAQUE IN HAMMERED BRASS.
When quite confident in the use of your tools, you can proceed to make a card-receiver decorated with an antique head, as in the figure; or by enlarging the design, and making the background circular, a plaque will be the result, which will be useful for holding fruit, or, set in a velvet frame, will make an ornament for your walls. A sheet of brass nearly one-eighth of an inch in thickness, and at least seventeen inches square will be required.
As in work of this character a deeper relief is desirable, you will find it more agreeable to work over a bed of composition, which is more yielding than wood, and can be made with but little trouble; this composition can be obtained in small cakes at any store where jewelers’ tools are for sale; but you can easily make it yourself by thoroughly mixing fine sand, well-sifted wood ashes, or even brick-dust, with equal parts of pitch or resin; a tiny bit of tallow improves it considerably. This pitch bed, as it is called, can be spread on a flat table or board, and the sheet of brass, after the design has been carefully traced thereon, fastened down upon it by means of four screws at the corners. To draw the design for the plaque, with a strong pair of carpenter’s dividers describe a circle whose diameter shall be sixteen and one-half inches, and within this draw a second circle, with a diameter of fifteen inches. The space between these two circles is to be left untouched, as it will be turned over to inclose the wire which forms the edge, if for a platter; or will extend under the edge of the velvet, if intended to be framed. Be sure and put your screws outside the large circle, as holes in the body of the plaque would ruin its effect. In this work heavier blows with the hammer will be needed; and a large, well-shaped nail used for the background. Work around the pattern until it stands out in line relief.
The brass will become discolored and black during the process of hammering; but, when done, it can be readily cleaned, at first with oxalic acid and rotten-stone, then a final polishing with chamois-skin.
When well polished, take it to a tinsmith and he will make it up for you as a platter, or trim and bend the edges for a plaque.