HELP! Why is my solder turning grey!? Using 60/40 solder and Novacan black patina! This is the second piece that has started to turn dull grey after about a month! : r/StainedGlass

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HELP! Why is my solder turning grey!? Using 60/40 solder and Novacan black patina! This is the second piece that has started to turn dull grey after about a month! : r/StainedGlass

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