OCR Text |
Show A Vseful Cement. The following mixture has bean used with the greatest possible success for the cementing of iron railing tops, iron gratings to stoves, etc.; in fact, with snrb effect as to resist the blows of a sledge hammer. This mixture is composed of equal parts of sulphur and white lead, with about one-si:;th proportion of borax, the three being thoroughly incorporated together, so as to form ono homogeneous mass. When the application is to be made of this composition it is wet with j strong sulphuric acid, and a thin layevof it is placed between the t wo pieoos of iron, these being at once pressed together. In live days it will be perfectly dry, all traces of the cement having vanished, nd the work having every appearance1 of welding. Hall's Journal of Paaith |