A process used in decorative glass where hydrofluoric acid is applied to the surface of the glass. Where the acid contacts the glass surface, the glass becomes frosted with a matte finish (similar to the effect caused by a sandblasting process). Patterns can be applied using special wax coatings on the glass. Where the glass is coated with wax, no corrosion of the surface will take place.
A process, manly used for glass decoration, where the glass surface is treated with hydrofluoric acid. Acid-etched glass has a distinctive, uniformly smooth and satin-like appearance.