For cracks in iron pots, &c.:—
| Iron filings | 10 |
| Clay | 60 |
This is mixed with linseed-oil to a paste. It requires several weeks to harden, but forms a hard cement.
A black cement for ironware:—
| Iron filings | 10 |
| Sand | 12 |
| Ivory black | 10 |
| Slacked lime | 12 |
| Lime water | 5 |
Schwartz’s iron cement for holes in pots, &c.:—
I.
| Finely powdered glue | 4-5 | |
| Finest iron dust | 2 | |
| Peroxide of manganese | 1 | |
| Common salt | ½ | |
| Borax | ½ |
To be powdered extremely fine or levigated and made with water to a paste. Resists fire and hot water.
II.