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Glassware Facts
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Glassware
 The image can be anything from a face to a fish or even words. Acid etching the process of etching the surface of with hydrofluoric acid. In some areas, potash was substituted for soda, which comes from wood ash. A mixture of dilute hydrofluoric acid and potassium fluoride is then applied to etch the exposed areas of .
| Glassware info: Amulet a charm believed to protect the wearer against evil or to bring good fortune. Boric oxide and alumina is added to the glassed container mix, reducing the coe to 33, and making it react far less to thermal changes. |
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