In addition to regular art glass-Stained Glass Express offers 33 Coe glass.
Why Glass Artists Should Choose COE 33
If you’ve worked with glass long enough, you know one of the biggest frustrations: cracking. Nothing is more discouraging than spending hours on a project, only to have it break because the glass wasn’t stable enough. That’s why many artists turn to COE 33 glass, also known as borosilicate glass.
What Makes COE 33 Special?
“COE” stands for Coefficient of Expansion—how much glass expands and contracts as it heats and cools. COE 33 has one of the lowest expansion rates of any art glass, which means it’s incredibly stable. Less expansion = less stress = fewer cracks.
Why Artists Love It
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Strength & Durability: Pieces are less likely to break, even thin details.
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Heat Resistance: Handles higher flame and kiln temperatures without problems.
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Crystal Clarity: Many artists love its clear base, perfect for encasements.
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Rich Colors: Available in rods, frits, and powders in a wide variety of colors.
When to Use COE 33
This glass shines in flame working—beads, pendants, sculpture, drinkware, and even lab-style pieces. It’s also great for any project where durability and longevity matter. Beginners love it for its forgiving nature, and professionals trust it for consistent, high-quality results.
How It Stands Out
Compared to other popular COEs like 90 or 96 (often used in fusing), COE 33 is unmatched in strength and thermal stability. If your work involves torches or high stress on the glass, COE 33 is the clear winner.
The Bottom Line
If you haven’t tried COE 33 yet, it might just change the way you think about glass. Stronger, more stable, and endlessly versatile—it’s a smart investment for any artist.
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