This section is from the book "A Practical Workshop Companion For Tin, Sheet Iron, And Copper Plate Workers", by Leroy J. Blinn. Also available from Amazon: A Practical Workshop Companion For Tin, Sheet Iron, And Copper Plate Workers.
1. Gum sandarach five pounds, camphor one ounce, rectified spirit 65 over proof) two gallons, washed and dried coarsely-pounded glass two pounds; proceed as in making mastic varnish; when strained add one quart of very pale turpentine varnish. Very fine. 2. Picked mastic and coarsely-ground glass, of each, four ounces, sandarach and pale clear Venice turpentine, of each three ounces, alcohol two pounds; as last. 3. Gum sandarach one pound, clear Strasburg turpentine six ounces, rectified spirit (G5 over proof) three pints dissolve. 4. Mastic in tears two ounces, sandarach eight ounces, gum elemi one ounce, Strasburgh or Scio turpentine (genuine) four ounces, rectified spirit (65 over proof) one quart. Used on metals, etc. Polishes well.
1. Tender copal seven and one-half ounces, camphor one ounce, alcohol of 95 per cent, one quart; dissolve, then add mastic two-ounces, Venice turpentine one ounce; dissolve and strain. Very white, drying, and capable of being polished when hard. Used for toys. 2. Sandarach eight ounces, mastic two ounces, Canada balsam four ounces, alcohol one quart. Used on paper, wood, or linen.
Sandarach six ounces, elemi (genuine) four ounces, anime one ounce, camphor one-half ounce, rectified spirit one quart; as before.
The above spirit varnishes are chiefly applied to objects of the toilette, as work-boxes, card-cases, etc., but are also suitable to other articles, whether of paper, wood, linen, or metal, that require a brilliant and quick-drying varnish. They mostly dry almost as soon as applied, and are usually hard enough to polish in 24 hours. Spirit varnishes are less durable and more liable to crack than oil varnishes.
 
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