I've come across a bunch of CR39 lenses, both coated and uncoated that have yellowed. In years past I've tried to "save" lenses that have yellowed with no success. Before I throw these lenses in the dumpster, use them for target shooting or donate them to a school for practice and take a tax deduction do any of my fellow Optiboarders have suggestions to get the yellow out?
Thanks in advance!
Larry
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