Pitterpotter Posted May 16, 2016 Report Share Posted May 16, 2016 I have used glass in some of my works in the past and truly enjoy the look of it. I rarely use this decoration because it was my understanding that any piece created with glass being melted and fused to the clay body was not food safe. I have seen other potters that use this process and it is being sold as being ok for food. Did I understand incorrectly or is there some way to utilize glass in some way that actually does render the surface that would come in contact with food safe for consumption? Thanks y'all! Just looking for answers~ Debi Link to comment Share on other sites More sharing options...
rayaldridge Posted May 16, 2016 Report Share Posted May 16, 2016 I've used glass melted into recesses in porcelain pieces, but I would not use the technique on surfaces that might come in contact with food. There are a couple of reasons for this. One is that you don't really know what is in the glass you might be using. The other reason is that the expansion co-efficients are so different between glass and clay that the glass will craze wildly, and these cracks could cause problems with food residue, and in some cases, bits of glass breaking loose. Link to comment Share on other sites More sharing options...
Denice Posted May 16, 2016 Report Share Posted May 16, 2016 The potters who are selling these clay and glass pieces as functional don't know what they are doing, not enough education. A lack of knowledge doesn't protect them from a massive lawsuit. Potter Link to comment Share on other sites More sharing options...
Pitterpotter Posted May 16, 2016 Author Report Share Posted May 16, 2016 That's what I thought. I may reach out to them to let them know, I would hate for someone to get sued over something like that. I couldn't imagine how it could be made food safe but then I certainly don't know everything!! lol Thanks for the responses. :-) Link to comment Share on other sites More sharing options...
glazenerd Posted May 16, 2016 Report Share Posted May 16, 2016 DebI: Check with some glass art suppliers: I know there are some products used for food. Some are, many are not: so it would require research to ensure you are not introducing non rated products. Then you also get to deal with COE issues as well . Nerd Link to comment Share on other sites More sharing options...
Pitterpotter Posted May 16, 2016 Author Report Share Posted May 16, 2016 What are COE issues? Link to comment Share on other sites More sharing options...
rayaldridge Posted May 17, 2016 Report Share Posted May 17, 2016 Coefficient of expansion Link to comment Share on other sites More sharing options...
Bob Coyle Posted May 17, 2016 Report Share Posted May 17, 2016 One of the bad things about a bad COE fit is that it may be close enough to not show up at first, and then start to crack as it ages, or after a few trips in and out of the fridge. Link to comment Share on other sites More sharing options...
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