To Clean Old Medals.
Steel Cleaner.
Restoring Tarnished Gold.—
| Sodium bicarbonate | 20 ounces |
| Chlorinated lime | 1 ounce |
| Common salt | 1 ounce |
| Water | 16 ounces |
Mix well and apply with a soft brush.
A very small quantity of the solution is sufficient, and it may be used either cold or lukewarm. Plain articles may be brightened by putting a drop or two of the liquid upon them and lightly brushing the surface with fine tissue paper. {200}
Cleaning Copper.—
I.—Use Armenian bole mixed into a paste with oleic acid.
| II.— | Rotten stone | 1 part |
|---|---|---|
| Iron subcarbonate | 3 parts | |
| Lard oil, a sufficient quantity. | ||
| III.— | Iron oxide | 10 parts |
| Pumice stone | 32 parts | |
| Oleic acid, a sufficient quantity. | ||
| IV.— | Soap, cut fine | 16 parts |
| Precipitated chalk | 2 parts | |
| Jewelers’ rouge | 1 part | |
| Cream of tartar | 1 part | |
| Magnesium carbonate | 1 part | |
| Water, a sufficient quantity. | ||
Dissolve the soap in the smallest quantity of water that will effect solution over a water bath. Add the other ingredients to the solution while still hot, stirring constantly.