to remove those tough stains but if watever remover you use try crypton stain remover , even you can buy it online.
http://www.cryptoncare.com/ink-iodine-grease-stain-remover.aspx
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Glass. When a stain glass window is made a pattern it cut out and placed over the glass. Then, the glass is cut around the pattern and the pieces are put together with lead. More or less like a...