This may be a silly question but here goes. I have been helping a young jewellery maker with a few bits and pieces of findings and advice where I can and she would like to try enamelling with a torch. I have lots of old pots from shop days and would like to give her some samples to save her spending out to begin with. In these health and safety days are these enamels still okay to use or do they maybe contain things no longer used? I don't want to give her anything unsafe.They are at least 30 years old.
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