Bullseye Medieval Green Frit is 90 COE fusible frit, crushed glass in graded grain sizes for casting, layering, shading, and decorative surface work.
Reactions If you place this next to copper-bearing, sulfur or selenium bearing, or silver-containing glass, a reaction line can form at the boundary. Fire a small test tile first if you want to avoid it.
Using the frit Bullseye frit is sold in grain sizes from powder to coarse. Powder gives soft, even color and shading, fine and medium build controlled texture and coverage, and coarse gives bold flecks of color and fills for casting and pattern bars. Choose the grain by the effect you want and the fired thickness of your piece.
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.
Helpful downloads What to Expect from Bullseye Glass (PDF)
Technical data courtesy of Bullseye Glass.
Description updated: July 7, 2026
Spot an error or have feedback on this description? Report it here .
