Bullseye Red Ribbon (style 000124) is 90 COE fusible ribbon, flat ribbons of glass for bold linear accents and woven or layered surface designs. 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.
Color variations common from red-orange to terracotta. Frequently lightly streaked and with yellow mottling on back of single-rolled sheet.
Working notes A cadmium/selenium glass. Can react with lead-bearing glasses or overglazes. Possible reactions with 001311, 001215. Much color variation typical upon firing. If specific color is important, always test before beginning project. Use glasses from same dates. Do not assume that sheets of the same color when cold will fire identically. This style is not suitable for kilncasting because it can become incompatible when held at high temperatures for an extended period. It may also become incompatible in instances where processes exceed the parameters of the test for compatibility. Testing recommended when heatwork exceeds these parameters.
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 ribbon Ribbon is a flat, wide strip of glass, heavier than a stringer, for bolder lines and woven or basket-style layouts. It fuses smoothly into the surface and holds a clean edge.
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 · Frit · Stringers · Confetti .
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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