Bullseye - COE 90
May React With
At tack fusing and slumping temperatures, the surface frequently develops a metallic gray film, similar to effects with Steel Blue Opalescent (000146). This may disappear at full fusing temperatures. Cap with clear to insure a consistent opal green through the clear layer. To maintain the metallic effect, extend hold times at tack fusing or slumping temperatures. The metallic layer may develop anywhere where 000345 is exposed and can change over the course of multiple firings. It ranges from a thin glossy gray to a thicker, matte metallic.
The exposed surface of 000345 has greater sensitivity to items such as glass cleaner, marker and Glastac. Traces of these liquids, which often fire cleanly, may be visible in fired works, even when wiped away before firing. To minimize this effect, reduce the contact time between the glass and possible contaminants. Also, avoid using Glastac on the surface.