As an etchant, hydrofluoric acid is often used. As an etching method, the glass to be etched is washed, dried and placed flat, coated with paraffin solution dissolved in gasoline as a protective layer, and the required words or patterns are carved on the solidified paraffin layer. When carving, it is necessary to carve through the paraffin layer to expose the glass. Then, drop hydrofluoric acid on the text or pattern exposed to the glass. According to the depth of the required pattern, after controlling the corrosion time for a certain period of time, wax and hydrofluoric acid can be washed away with warm water to make glass with beautiful pattern.<br>characteristic:<br>1. The use of a special etching agent with ammonium fluoride as the effective component has less pollution and greatly improved the operating environment.<br>2. Without protective layer, paraffin and gasoline can be saved, manufacturing process can be reduced and efficiency can be improved.<br>3. The etchant used is easy to obtain, simple to prepare and convenient to use.<br>4、 Compared with the past, the etched glass has good quality and low cost.<br>
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