acid-engraving

The technique of etching the surface of glass with hydrofluoric acid.

Acid-etched decoration is produced by covering the glass with an acid-resistant substance such as resin or wax, incising a design.and then exposing the revealed areas to hydrofluoric acid.

Acid etching was first developed on a commercial scale by Richardson’s of Stourbridge, which registered a patent in 1857.

Also called acid-etching.