The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . oach can be passed. When the cork has been turned quite true onits end and edge, the broach is passed through, and used to enlarge thehole; by pressing against the back of the cork, it is kept against thebarrel, whereby the broach is maintained in a vertical position. To Solder Broken Broaches. Steel broaches and other tools aresoldered by cleaning well the parts broken, then dipping them into asolution of sulphate of copper, and soldering them with ordinary softsolder. The joint is a go
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The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . oach can be passed. When the cork has been turned quite true onits end and edge, the broach is passed through, and used to enlarge thehole; by pressing against the back of the cork, it is kept against thebarrel, whereby the broach is maintained in a vertical position. To Solder Broken Broaches. Steel broaches and other tools aresoldered by cleaning well the parts broken, then dipping them into asolution of sulphate of copper, and soldering them with ordinary softsolder. The joint is a good one and will stand ordinary hard wear. BRONZING. See Electro-Plating^ Bronzing and Staining. BUFF. A device for polishing or reducing metals. Emery buffs are round or square stickson which emery paper orcloth is glued. They areused to reduce the surfacesof metal. Fig. 43 illustrates^^^- ?*• a ring buff used for polishing the inside of rings, preferably used on a polishing lathe. BULLSEYE. A thick watch resembling a bulls eye in shape. Aterm usually applied to old fashioned English verge watches.. Burnisher. 54 BURNISHER. A polished steel or agate tool used for glossing thethe surface of metals. Fig. 44 is a jewel burnisher. The article to beburnished must be first freed from all scratches, for scratches wouldonly be brought out more prominently by the use of the burnisher. Theburnisher must be kept highly polished or you cannot expect to do goodwork with it. Saunier gives the following method of re-facing a bur-nisher: Prepare a dry smooth piece of wood, rather thick, and of awidth equal to the length of the burnisher. On this board carefully gluea piece of emery paper of a fineness corresponding to the degree of cut Fig. U. required, stretching it as even as possible, and turning the edges downtowards the under side. Then lay the board on a firm smooth surface, resting a weight upon it, and allow it to dry. In using this lap, it is fixedor allowed to rest against the side