I have "The Jewelry Repair Manual" by R. Allen Hardy @ 1956.
He has a jewelry cleaning solution that contains 1 oz. acetone, 1
oz. oleic acid, 14 ozs. aqua-ammonia, 16 ozs. water. This will equal
a 1 quart of mixture of cleaning solution.
What is the oleic acid? Is it used any more as part of a jewelry
I know that some of the things in his book seem to be outdated as he
also mentions a tarnish remover with one of the ingredients as
cyanide, (the poison).
Larry E. Whittington