Scientific American 47, 11.8.1849
Put into a bottle three pounds of gum sandarac, two pounds of shellac, and two gallons of spirits of wine, 60 over proof; proceed as directed for the white hard varnish, and agitating it when cold, which requires about four hours time, without any danger of fire; whereas, making spirit varnish by heat is always dangerous. No spirit varnish should be made either by candle light or by fire. When strained add one quart of turpentine varnish, mix it well; next day it will be fit for use.
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