✨ Stained Glass Glossary: Cutting Tools ✨ A stained glass window is made up of lots of different shaped pieces of glass, with large sheets cut into the specific shapes an artist might need. Find out more about the ways in which modern, and medieval, artists shape their glass using a variety of different cutting tools. From diamonds to water jets - there are lots of ways to approach this task! Our stained glass glossary videos here at the museum help to explain some of the key terms you might com