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  #64  
Old 05-31-2018, 05:04 PM
Dan Vanantwerp
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Just for some additional info:
That crucible has never seen anything but Cristalica and this was my first time adding black tin. I had about 1/4 glass left of a 80 lb crucible at the end of a day. Added 20lbs fritted Cristalica with 50g black tin. Went from clear to yellow overnight.

Will post a color pick later.
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