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AndyL

Forbidden Glazes, Clays ....etc Archive Needed Imo

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II feel there is a need to have an archive someware organized like a Chappell Book of the glazes/CAD Glaze Recipe Archive, etc that are Dangerous to use. it could be referenced not to use them until a safe technology happens to make them safe, a  new mining of chemicals that give them these safe properties, they needed to be remade for historical restorations or responsible potter(s)/manufacture's of pottery can reformulate with new chemicals

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Are you referring to handling raw materials or glazes that are not food safe? Technically, all glaze materials are dangerous to use in some way. Proper handling and hygiene methods are always needed, and if done properly the risk is minimized. As for keeping a catalogue of the dangers of raw materials, any good glaze book will have that information. 

 

As for glazes being 'dangerous', there's an infinite number of glaze formulas possible, so keeping a catalogue would be impossible. Also, who would be in charge of verifying the safety of the glazes? Who is going to pay to have them tested by a lab? I've seen many glazes here on the forum that were supposedly food safe but really weren't. You can't trust anyone when it comes to safety. Ultimately, it is up to the person making the work to know if the glaze is safe for use with food or not. When in doubt, don't use it or get it tested.

 

The key here is to educate yourself as much as possible about the materials you're using so you can handle and employ them in the safest manner possible.

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I agree there are a great many things potentially dangerous. IMO a record of dangerous ceramic formulas and processes may be getting forgotten or lost entirely. At the very least archiving what available knowledge of past, current and future ones should safely stored. To put out a broad example  consider the loss to the world if the COMPLETE collection of a current major world library  was totally gone? Knowledge should not be lost like the Library of Alexandria...or Ceramic Knowledge like undecipherable glyphs because the knowledge to understand them was not preserved.

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