Home › Cements And Uniting Bodies › Cheap Parlor Matches

Cheap Parlor Matches

A cheaper paste for dipping may be made by aking 6 parts glue for 24 hours in a little would prove entirely worthless if improperly applied. The preparations given below will be found to answer every reasonable demand; and if properly prepared and used strictly according to the directions laid down, will seldom fail to form a union as strong, if rot stronger than the substances joined. first point that demands attention, is to bring The and strain through linen. Mix this, while hot, with a solution of 1 drachm mastic in 1 ounce rectified spirit, and triturate thoroughly with drachm powdered gum ammoniac. the cement itself into intimate contact with the surface to be united. This end is best reached, when using hot cements, by making the edges to be joined at least as hot as the cement when applied, or as nearly so as can be done without injury to the substance; in some cases it is even preferable to melt the cement on the heated edges. Another very important point is to use as little cement as possible. When the surfaces are separated by a large mass of cement, we have to depend upon the strength of the cement itself, and 2155. Chinese Cement. Take of or-