What are "striking" glass colors?

There's more to glass compatability than coefficient of expansion (COE) and sometimes it is necessary to conduct your own tests

Some Bullseye glasses appear pale or colorless in the cold sheet form, but “strike” or mature to a much different color when fired. Striking colors can vary, depending on temperature, atmosphere, and heat history.

For projects that are especially color-sensitive, we recommend testing your striking glasses prior to use either by fusing or torch working small samples. This will help you predict final color results.

Our video lesson Heatwork and Color covers the topic of striking glasses. You can also learn more in our article What to Expect from Bullseye Glass.

Related Questions

Do glass colors change in kilncasting?
How do Bullseye colors look after firing?
Do all Bullseye glasses perform the same in the kiln?

Helpful Resources

About Our Glass
TechNote 4: Heat and Glass
Kilnforming Project Notes Form
Get a Reaction: Bullseye Copper-Bearing Glasses
Get a Reaction: Bullseye Reactive Glasses
What to Expect from Opaline Striker Frit


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