wunder · LibraryPart 277
Read in the Wunder reader — free«Best Oreide of Gold.»—Pure copper, 4 ounces; sheet zinc, 1 3/4 ounces; magnesia, 5/8 ounce; sal ammoniac, 11/32 ounce; quicklime, 9/32 ounce; cream tartar, 7/8 ounce. First melt the copper at as low a temperature as it will melt; then add the zinc, and afterwards the other articles in powder, in the order named. Use a charcoal fire to melt these metals.
«Bushing Alloy for Pivot Holes, etc.»—Gold coin, 3 pennyweights; silver, 1 pennyweight, 20 grains; copper, 3 pennyweights, 20 grains; palladium, 1 pennyweight. The best composition known for the purpose named.
«Gold Solder for 14- to 16-Carat Work.»—Gold coin, 1 pennyweight; pure silver, 9 grains; pure copper, 6 grains; brass, 3 grains.
«Darker Solder.»—Gold coin, 1 pennyweight; pure copper, 8 grains; pure silver, 5 grains; brass, 2 grains. Melt together in charcoal fire.
«Solder for Gold.»—Gold, 6 pennyweights; silver, 1 pennyweight; copper, 2 pennyweights.
«Soft Gold Solder.»—Gold, 4 parts; silver, 1 part; copper, 1 part.
«Solders for Silver» (for the use of jewelers).—Fine silver, 19 pennyweights; copper, 1 pennyweight; sheet brass, 10 pennyweights.
«White Solder for Silver.»—Silver, 1 ounce; tin, 1 ounce.
«Silver Solder for Plated Metal.»—Fine silver, 1 ounce; brass, 10 pennyweights.
«Solders for Gold.»—I.—Silver, 7 parts; copper, 1 part; with borax.
II.—Gold, 2 parts; silver, 1 part; copper, 1 part.
III.—Gold, 3 parts; silver, 3 parts; copper, 1 part; zinc, 1/2 part.
«For Silver.»—Silver, 2 parts; brass, 1 part; with borax; or, silver, 4 parts; brass, 3 parts; zinc, 1/18 part; with borax.
«Gold Solders» (see also Solders).—I.—Copper, 24.24 parts; silver, 27.57 parts; gold, 48.19 parts.
II.—Enamel Solder.—Copper, 25 parts; silver, 7.07 parts; gold, 67.93 parts.
III.—Copper, 26.55 parts; zinc, 6.25 parts; silver, 31.25 parts; gold, 36 parts.
IV.—Enamel Solder.—Silver, 19.57 parts; gold, 80.43 parts.
«Solder for 22-Carat Gold.»—Gold of 22 carats, 1 pennyweight; silver, 2 grains; copper, 1 grain.
«For 18-Carat Gold.»—Gold of 18 carats, 1 pennyweight; silver, 2 grains; copper, 1 grain.
«For Cheaper Gold.»—I.—Gold, 1 pennyweight; silver, 10 grains; copper, 8 grains.
II.—Fine gold, 1 pennyweight; silver, 1 pennyweight; copper, 1 pennyweight.
«Silver Solders» (see also Solders).—I. (Hard.)—Copper, 30 parts; zinc, 12.85 parts; silver, 57.15 parts.
II.—Copper, 23.33 parts; zinc, 10 parts; silver, 66.67 parts.
III.—Copper, 26.66 parts; zinc, 10 parts; silver, 63.34 parts.
IV. (Soft.)—Copper, 14.75 parts; zinc, 8.50 parts; silver, 77.05 parts.
V.—Copper, 22.34 parts; zinc, 10.48 parts; silver, 67.18 parts.
VI.—Tin, 63 parts; lead, 37 parts.
«FOR SILVERSMITHS:»
Henley's Twentieth Century Formulas, Recipes and Processes · The Wunder Library — complete classics, free to read, with narration.