_How to make Small Drills._—Then, again, to make small drills of steel wire, use the lamp for heating and tempering. If a small drill be broken, draw the temper in the lamp preparatory to forming it anew. Drills of larger size may be hardened in the forge fire, brightened by grinding or rubbing on a piece of fine emery cloth, and the temper readily drawn in the lamp. The same process may be applied to tempering small screw taps. Small screws can be readily blued in the same manner. _Advantages of the Alcohol Lamp._—The lamp has this advantage over the forge-fire; it draws the temper very evenly, and the temper color can be readily seen, as the flame of alcohol makes no smoke to obscure it. Even for small tempering, when once employed, no gunsmith will think of discontinuing its use. _The Soldering Copper._—The soldering copper for the use of the gunsmith should be about one and a half pounds in weight. The length of the copper should be about four or five inches, of octagon form, with a square pyramidal shaped point. It is fixed to an iron rod about eight inches long, on the end of which is a wooden handle. _How to Heat the Copper._—When heating the copper for use, the best way to ascertain the proper heat is to hold it near the face, and if a bright warm glow is felt, it is hot enough for use. If heated too hot the tinning will be burned off, and it will not work satisfactorily. To replace the tinning, heat it warm enough to just melt the solder, and file the surface to be tinned bright and smooth, then place a little solder and a bit of resin on a piece of sheet-tin, and in this rub the heated copper until the brightened surface has received a coating of the solder, the resin acting as a flux during the operation. _How to Tin the Copper._—Another method to tin a copper is to put the solder and the resin on a brick, heat the copper and rub until it receives the tin coating. The common soldering acid may be used instead of the resin for a flux. During the operation the point of the copper may be dipped in the acid to facilitate the tinning. It will be found that a too free use of the acid, if used as a flux, for general work, will soon destroy the point of the copper. When this is the case file off the roughness and heat the copper quite warm, and draw it out to shape on the anvil, the same as if working a piece of iron. When so shaped, file smooth and re-tin as directed.