Take 1 oz. of copal, and 1/2 oz. of shellac, powder them well and put them into a bottle or jar containing 1 quart of spirits of wine; place the mixture in a warm place and shake it occasionally, till you see that the gums are completely dissolved, and when strained the varnish is fit for use.
108. WHITE HARD VARNISH
Take 1 lb. of mastic, 4 oz. of gum anima; and 5 lbs. of gum sandrack, put them all together to dissolve, into a vessel containing 2 oz. of rectified spirits of wine, which should be kept in a warm place and frequently shaken till all the gums are quite dissolved; then strain the mixture through a lawn sieve, and it will be fit for use.
109. CRYSTAL VARNISH
Procure a bottle of Canada balsam, which can be had at any druggist's; draw out he cork and set the bottle of balsam at a little distance from the fire, turning it round several times, until the heat has thinned it; then have something that will hold as much as double the quantity of balsam; carry the balsam from the fire, and, while fluid mix it with the same quantity of good turpentine, and shake them together until they are well incorporated. In a few days the varnish is fit for use, particularly if it is poured into a half gallon glass or stone bottle, and kept in a gentle warmth. This varnish is used for maps, prints, charts, drawings, paper, ornaments, &c.
110. BLACK VARNISH FOR OLD STRAW OR CHIP HATS
Take a 1/2 oz. of the best black sealing wax, pound it well, and put it into a 4 oz. vial, containing 2 ozs. of rectified spirits of wine; place it in a sand-bath or near a moderate fire till the wax is dissolved, then lay it on warm, with a fine soft hairbrush, before a fire or in the sun. It gives a good stiffness to old straw hats, and a beautiful gloss equal to new. It likewise resists wet.
111. VARNISH FOR VIOLINS &c.
Take 1 gallon of rectified spirits of wine, 12 ozs. of mastic, and 1 pint of turpentine varnish; put them altogether in a tin can, and keep it in a very warm place, shaking it occasionally till it is perfectly dissolved; then strain it, and it is fit for use. If you find it necessary, you may dilute it with turpentine varnish. This varnish is also very useful for furniture of plumtree, mahogany, or rosewood.