Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
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Universal Cement
Dissolve 2 ounces mastic in just enough 95 per cent. alcohol to effect a solution. Then soak 2 ounces isinglass, or fish-glue until it is thoroughly softened. Dissolve the isinglass in proof spirits sufficient to form a strong glue, 2169. Red Lead Cement for Face and then add 1 ounce finely pulverized gumam- Joints. Mix 1 part each white and red lead moniac. Warm the two mixtures together with linseed oil to the proper consistence. over a slow fire, and when they are thorough- 2170. Singer's Cement for Electrical ly mixed, bottle and hermetically seal them. Machines and Galvanic Troughs. Melt This cement becomes perfectly dry in 12 or together 5 pounds resin, and 1 pound bees' 15 hours. When the cement is to be used,