Tools: Vise, shears, mallet, hard solder, borax, rivet set (steel tool), dividers, and centre punch.
Sheet developed for sides and ends. Bend on division lines
Directions: Make a working drawing of a box, 6 × 4 × 1⁄4 ins., (inside measurements). The box is to have feet, and a lid with hinges is to be fastened to it. Take the strip of copper, 20 × 11⁄4 ins., measure it off into sections of 4 ins. and 6 ins. alternately. Beginning on one end mark a point 3⁄8 in. from the end. (Point G.) Draw a line (E G) 1⁄8 in. long, perpendicular to the base line. With the dividers set 1⁄8 in. apart, and one leg placed against the base line, draw a line 31⁄4 ins. long paralleled to the base. (Line E F). Draw F H. In the section D C M S, mark the point O 3⁄8 of an inch from D. Draw K O equal to 1⁄8 of an inch. With the dividers set at 1⁄8 in., draw a line 51⁄4 ins. long (K L). Join L and N. Repeat this in the other two sections. With the shears, cut along lines G, G E, E F, F H, H O, O K, K L, L N, etc. The projections left form the four feet for the box to rest upon. To bend the corners, mark with lead-pencil C D, M S, R T. Place these division lines, in turn, between the jaws of the vise, and bend down at right angles. You now have a rectangular box like the picture, with one corner open.
To close the side, solder the open end. Clean thoroughly the parts to be joined. Place the parts in their proper positions and bind the corner with binding wire. Wash the joint with borax. Place some small pieces of silver solder on the inside corner. Hold it over a fire and heat until the solder runs into the joint. Cool off in water and take off the binding wire. If the solder should run through and fasten the wire to the side of the box, the wire can be peeled off and the solder filed down to the copper. But care must be taken not to let the binding wire sink into the copper. File up the corners smooth and square up the box with a steel square. To make the bottom of the box: Take the piece of No. 24 copper, 63⁄8 × 43⁄8 ins. Set the dividers 3⁄16 in. wide. With one leg on the edge of this plate, draw lines on the four sides.
