Stunt glass is typically made of sugar, because it looks translucent like glass and shatters in the same way that glass does but does not cut actors. To make stunt glass, you need 1 cup of sugar, a baking sheet, butter or baking paper, food coloring (if desired) and a candy thermometer. The process takes about 30 minutes.
Prepare the pan
To prepare the pan, butter it or line it with baking paper, and place it into the refrigerator to cool.
Make the sugar syrup
Pour the sugar into a small pan on the stove on low heat. Stir the sugar continuously until it melts, which may take a while. With a candy thermometer, monitor the temperature of the melting sugar and remove it at the hard crack stage or when the thermometer is between 300 F and 310 F. If the mixture is cooked past the hard crack stage, it turns amber instead of being clear and the "windows" gain an amber tint.
Shape the sugar glass
To allow the sugar mixture to form into windowpanes, pour it into your chilled baking sheet and allow it to cool. If you wish to color your windows, add food coloring after the sugar has finished cooking and has cooled slightly.