THE northern branch of the Guild of Glass Engravers, which meets near Bedale in North Yorkshire, opens an exhibition, Echoes of Light, at the Bowes Museum on July 30.

The members use modern techniques and hope to raise interest in the medium. Exhibits for sale will include cased coloured glass, vases, bowls, goblets and other items covering a wide range of subject matter.

The branch meets quarterly at Patrick Brompton for sessions and tutorials with invited glass engravers and to discuss anything to do with glass engraving.

It welcomes anyone keen to know more about what they describe as "this magical form of decoration".

Modern-day use of electric hand-held drill has expanded the possibilities of decorative engraving, allowing huge projects such as church screens, windows and architectural subjects. Sand blasting and acid etching add to the possibilities.

In the 17th and 18th Centuries, copper wheel engraving was the most common method. This requires many years of practice.

Stipple engraving with a hand-held stylus or scriber was widely used in early Dutch glass of the 16th Century, but the practice almost disappeared.

The guild has found that exhibitions encourage visitors to ask questions and appreciate the artistic ability of the engraver.

It is a charitable organisation with worldwide membership whose main objective is to inform, educate and captivate the public about the art of glass engraving. For information, visit www.gge.org.uk.

On September 24 and October 22, Sandra Snaddon, Fellow of the Guild of Glass Engravers, will run introductory workshops with three sessions throughout the day. Participants must be over 16. The cost is £18 or £15 for Friends of the museum.