Tin, sheet-iron and copper-plate worker; a practical workshop companion, containing rules for describing various kinds of patterns used by tin, sheet-iron and copper-plate workers; by Blinn Leory J

Author:Blinn, Leory J
Language: eng
Format: epub, pdf
Tags: Sheet-metal work, Workshop recipes
Publisher: New York : H.C. Baird & co., inc.
Published: 1920-03-25T05:00:00+00:00

turpentine, also heated beforehand. Filter, while yet warm, into bottles. Dries slowly.

2. Two ounces India rubber finely divided and digested in the same way, with a quarter of a pound of camphene, and half an ounce of naphtha or benzole. When dissolved add one ounce of copal varnish, which renders it more durable. Principally for gilding.

3. In a wide-mouthed glass bottle, digest two ounces of India rubber in fine shavings, with one pound of oil of turpentine, during two days, without shaking; then stir up with a wooden spatula. Add another pound of oil of turpentine, and digest, with frequent agitation, until all is dissolved. Then mix a pound and a half of this solution with two pounds of very white copal-oil varnish, and a pound and a half of well boiled linseed oil; shake and digest in a sand bath, until they have united into a good varnish.—For morocco leather.

4. Four ounces India rubber in fine shavings are dissolved in a covered jar by means of a sand bath, in two pounds of crude benzole, and then mixed with four pounds of hot linseed oil varnish, and half a pound of oil of turpentine. Dries very well.

5. Flexible Varnish. —Melt one pound of rosin, and add gradually half a pound of India rubber in very fine shavings, and stir until cold. Then heat again, slowly, add one pound of linseed oil varnish, previously heated, and then filter.

6. Another. —Dissolve one pound of gum dammar, and a half pound of India rubber, in very small pieces, in one pound of oil of turpentine, by means of a water bath. Add one pound of hot oil varnish and filter.

7. India rubber in small pieces, washed and dried, is fused for three hours in a close vessel, on a gradually heated sand bath. On removing from the sand bath, open the vessel and stir for ten minutes, then close again, and

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