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My clear frit work went from cloudy to sharp after switching to a different annealing schedule.
For years my frit pieces came out looking a bit foggy, especially with dense color. I started using a slower ramp down from 1050 to 800 degrees, holding for 45 minutes, and the difference is night and day. Is a long soak at a higher temp really that critical, or is it more about the overall cooling curve?
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piper1757mo ago
Actually, that hold at 800 is doing the real work. The slower ramp just gets you there without stress. The glass needs that time to settle its structure.
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loganhart7mo ago
The annealing hold is what actually relieves the stress, not the ramp.
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lopez.holly6mo ago
Wait, you're saying the ramp does nothing? That's wild. I always thought the slow climb was the whole point of annealing. So the glass just chills out once it hits the right temp and hangs out?
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