Cement For Luting Crucible Lids

For luting crucible lids apply to a concentrated solution of borax a thick paste made from lime freshly slaked to a powder. Allow same to dry slowly and heat as customary.

Cement For Machine Parts

A good cement for machine parts consists of a compound of gutta percha with filings of iron, steel, copper or brass, or as a substitute for the latter, with powdered iron or copper ores.

Cement For Metal And Glass

To fasten metal on glass rapidly and securely, thoroughly mix 50 parts of dried white lead with 100 parts by weight of pulverized white litharge and stir it to a plastic mass by mixing in 1 part of copal lacquer and 3 parts of boiled linseed oil. The process of cementing is easy. Coat the lower surface of the metal with the cement, press upon the glass and remove the excess of cement with a proper tool. Then cement dries quickly and becomes very hard.

Cement For Metal Mountings On Porcelain, Brass, Etc

For fastening metal mountings on metal, glass, etc., dissolve in water 2 parts of high grade glue. Heat the solution over a coal fire and then add 1/2 part of Venetian turpentine and 1 part of good linseed oil varnish. After the articles have been cemented they should remain tied together for from 40 to 60 hours.

Cement For Metal Parts On Glass Lamps, Etc

A cement for fastening the metal parts on glass lamps, etc., is composed of 20 parts plaster of paris, 20 parts of water, 16 parts of strong lime, 12 parts of resin. Boil the resin with the lime until it is completely dissolved, and when cold, it forms a solid and tenacious mass. Dilute this by the addition of water and carefully work in the plaster of paris. You can dissolve this in petroleum.

Cement For Packing Steam Pistons

A cement for packing stuffing boxes and pistons for steam engines is composed of:

10 parts Copper, Zinc or Lead Filings, 1 part Powdered Graphite,

1 part Silicate of Magnesia,

2 parts Gutta-percha, 1 part Sulphur,

5 parts Caoutchouc.

If this cement is to be exposed to the direct action of the fire or place where it will encounter a high degree of heat, asbestos should be added to the mixture.

Cement For Pipe Conduits Unexposed To Heat

Cement for pipe conduits which are not exposed to heat is made of:

10 parts Iron Fillings, 1 part Sal-ammoniac, 1 part Sulphur, 4 parts Caoutchouc, 1 part Gutta-percha.

Cement For Punctured Tires

A cement for punctured bicycle tires is composed as follows: Bisulphide of carbon. 100 parts; guttapercha, 20 parts; caoutchouc, 40 parts; isinglass, 10 parts.

Cement For Repairing Iron Pans

Take 1 part of fine black lead, 2 parts sulphur; place the sulphur in an iron pan, elevating it from the fire until the commencement of melting, at which time the black lead is to be added. Mix thoroughly until it is well melted and then pour out upon a smooth stone or iron plate. After it is cool, break it into small pieces. A large enough amount of this composition when put upon the crack of an iron pot needing repairing can be soldered with a hot iron just as sheets are soldered. When there is a little hole in the pot, hammer a copper rivet therein and then solder over it with this cement.