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This page describes practices involving highly flammable materials in ways that create a serious risk of fire or explosion.
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Home › Spirit Varnishes › India-Rubber Oil Varnish (Cut up pound India-rubber into)
India-Rubber Oil Varnish (Cut up pound India-rubber into)
Cut up 1 pound India-rubber into small pieces and diffuse in 1/2 pound sulphuric ether, which is done by digestion in a glass flask on a sand-bath. Then add 1 pound pale linseed oil varnish, previously heated, and after settling, 1 pound oil of turpentine, also heated beforehand. Filter, while yet warm, into bottles. Dries slowly. oil of turpentine. Or: Canada balsam and clear white resin, of each 6 ounces; oil of turpentine, 1 quart, dissolved. Used for prints, engravings, &c.