Bullseye Sienna Stringers (style 001119) are 90 COE fusible stringers, thin rods of glass for drawing fine lines, outlines, and linear detail on fused work. As a striking color, it may not reach its final shade until it is fired.
Cold characteristics Bullseye writes these notes for the sheet form of this color; the same glass is used to make this product.
Uniform color.
Working notes This style is not suitable for kilncasting because it can opalize and/or become incompatible when held at high temperatures for an extended period. It may also opalize and/or become incompatible in instances where processes exceed the parameters of the test for compatibility. Testing recommended when heatwork exceeds these parameters. Heatwork & Cadmium-Bearing Glass
Reactions This is a reactive glass. It contains Sulfur (S) / Selenium (Se) and may react where it meets Copper (Cu), Lead (Pb), and Silver (Ag), forming a visible line or halo at the boundary. Use that on purpose to outline and add depth, or keep reactive colors apart to avoid it.
Using the stringers Stringers are thin, uniform rods you lay on the surface to draw lines, borders, lettering, and fine detail. They fuse flat into the glass and can be snipped, bent with a little heat, or arranged into patterns before firing.
Fusing and compatibility Tested compatible with other Bullseye glass. When you combine it with glass from other makers, matching COE alone does not guarantee compatibility, so fire a small test tile first.
More of This Color The same Bullseye color in other forms: 3mm Sheet · 2mm Thin Sheet · 3mm Iridescent Sheet · 2mm Iridescent Sheet · Frit .
Helpful downloads What to Expect from Bullseye Glass (PDF) · Reactive Potential of Bullseye Glass (PDF)
Technical data courtesy of Bullseye Glass.
Description updated: July 7, 2026
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