Crack the glue and put it in a bottle, add common whisky; shake up, cork tight, and in three or four days it can be used. It requires no heating, will keep for almost any length of time, and is at all times ready to use, except in the coldest of weather, when it will require warming. It must be kept tight, so that the whisky will not evaporate. The usual corks or stoppers should not be used. It will become clogged. A tin stopper covering the bottle, but fitting as closely as possible, must be used.
Glue to resist heat and moisture is made as follows: Mix a handful of quick-lime in four ounces of linseed oil, boil to a good thickness, then spread it on tin plates in the shade, and it will become very hard, but may be easily dissolved over the fire as glue.
A glue which will resist the action of water is made by boiling one pound of common glue in two quarts of skimmed milk.
Shred finely two ounces of beeswax and half an ounce of white wax into half a pint of turpentine; set in a warm place until dissolved, then pour over the mixture the following, boiled together until melted: Half a pint of water, an ounce of castile soap and a piece or resin the size of a small nutmeg. Mix thoroughly and keep in a wide-necked stone bottle for use. This cleans well and leaves a good polish, and may be made at a fourth of the price it is sold at.
To half a pint of milk put an equal quantity of vinegar in order to curdle it; then separate the curd from the whey and mix the whey with the whites of four or five eggs, beating the whole well together. When it is well-mixed, add a little quick-lime, through a sieve, until it has acquired the consistency of a thick paste. With this cement broken vessels and cracks of all kinds may be mended. It dries quickly and resists the action of fire and water.
Another: Into a thick solution of gum arabic, stir plaster of Paris until the mixture assumes the consistency of cream; apply with a brush to the broken edges of china and join together. In three days the article cannot be broken in the same place. The whiteness of the cement adds to its value.
Cracks in floors may be neatly but permanently filled by thoroughly soaking newspapers in paste made of half a pound of flour, three quarts of water and half a pound of alum mixed and boiled. The mixture will be about as thick as putty, and may be forced into the crevice with a case knife. It will harden like papier-mache.
Dissolve a teaspoonful of alum in a quart of water. When cold, stir in flour, to give it the consistency of thick cream, being particular to beat up all the lumps. Stir in as much powdered resin as will lie on a dime, and throw in half a dozen cloves to give it a pleasant odor. Have on the fire a teacupful of boiling water; pour the flour mixture into it, stirring well all the time. In a few minutes it will be of the consistency of molasses. Pour it into an earthen or china vessel, let it cool, and stir in a small teaspoonful each of oil of cloves and of sassafras; lay a cover on, and put in a cool place. When needed for use, take out a portion and soften it with warm water. This is a fine paste to use to stiffen embroidery.
A cement which is proof against boiling acids may be made by a composition of India rubber, tallow, lime and red lead. The India rubber must first be melted by a gentle heat, and then six to eight per cent. by weight of tallow is added, to the mixture while it is kept well stirred; next day slaked lime is applied, until the fluid mass assumes a consistency similar to that of soft paste; lastly, twenty per cent. of red lead is added in order to make it harden and dry.
Soften good glue in water, then boil it with strong vinegar and thicken the liquid, during boiling, with fine wheat flour, so that a paste results; or starch paste with which a little Venice turpentine has been incorporated while it was warm.
A recipe for a transparent cement which possesses great tenacity and has not the slightest yellow tinge: Mix in a well-stoppered bottle ten drachms of chloroform with ten and one-half of non-vulcanized caoutchouc (rubber) cut in small pieces. Solution is readily effected and when it is completed add two and one-half drachms of mastic. Let the whole macerate from eight to ten days without the application of any heat and shake the contents of the bottle at intervals. A perfectly white and very adhesive cement is the result.
Take of gum dextrine two parts, acetic acid one part, water five parts. Dissolve in a water bath and add alcohol one part.
Gum of great strength, which will also keep for a long time, is prepared by dissolving equal parts of gum ara.bic and gum traga-canth in vinegar. A little vinegar added to ordinary gum water will make it keep much better.