Designs for stained glass projects can be created from scratch, or developed from existing patterns found in art books and on the internet. When a design is finalized, it can be applied to the glass in several ways, including:
- Placing the pattern under the glass, then tracing the lines onto the glass with markers or scoring tools,
- Cutting out the pattern pieces, then cementing them to the glass.
Once the pattern is applied, the glass is cut by first scoring (or scratching) it, then breaking (or grozing) it along the score line. The edges of each piece are then smoothed with a grinder.