Northstar Glassworks
Turbo Cobalt
Extremely saturated cobalt blue; work in a heavily oxidizing flame to prevent graying out.
Outcomes
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deep, highly saturated cobalt blueWork in a heavily oxidizing flame to achieve full saturation and prevent graying.
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grayed-out cobalt (under-oxidized)Insufficient oxidization causes the color to gray — keep the flame heavily oxidizing to avoid this.
Working notes
- Work in a heavily oxidizing flame — neutral or reducing flame will cause graying.