The process of engraving involves using copper wheels with a mix of carborundum and oil to grind into the glass. Every stage of the process is done by hand and is very labour intensive. Wilma MacKenzie is one of the few remaining qualified practitioners of copper wheel engraving, mainly working on commissions, (clients including Museums of Scotland, Outlander TV series). Learn more at this unique event. For more information please go to: http://glasgowdoorsopenday.com/event/wilma-mackenzie-glass-engraver/