Acid etching
Surface treatment for glass using hydrofluoric acid or ammonium bifluoride to remove areas of the glass. A potentially hazardous process.
Peter Riley, a Victorian based kiln maker, with over fifty years of experience in related industries. 
Strain pointLower point of annealing zone. Defined as the temperature below which permanent stress is not induced nor relieved in a particular glass. Equates to viscosity of 1014.5 poises. |
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