Sawing off pieces of tubing for hinges
Fine hinges: To make a hinge for a box, bracelet, or any small dainty article that requires hinges, take a piece of the tube made as described. After you have decided just how long the hinge must be to fit the article you are making, saw the tube into three pieces, or five pieces, of equal length by placing the tube in a vise. If it is to be a three-piece hinge, two will be soldered on the one side and one on the other, the two just far enough apart so that the one is in position to fit exactly in between them. When the three pieces are in place, a wire is pushed through the hole, and the hinge is made.
Filing half round groove in hinge, for tube
To make the wings of the hinge: Take a piece of silver or copper, No. 10, the length and width to be determined by the size of the hinge. Place this copper plate in the vise, file a groove through the centre, just large enough for the copper or silver tube to fit in about half its depth.
Saw the piece through the middle of the groove.
Bind in place with binding wire, and solder
Take two of the three short tube pieces, bind them on the groove ends of one wing. Bind the third piece of tubing in the middle of the groove end of the other wing. Place the two wings together and see that they fit closely. Do this with the greatest care, as there is no possible chance for filing after the tubes are soldered on the wings. Wash with borax, put some silver solder on the joints, and solder as before explained. When binding the tubes for soldering do not put the binding wire through the holes of the tubes. This wire makes a good conductor for the solder which is apt to fill up the small holes in the tubes.