Zuni Posted January 5, 2012 Report Share Posted January 5, 2012 I fired Miller 510 clay to ^04, glazed with a ^9/^10 glaze, and my pieces melted into beautiful pools of color! Consensus is that the clay wasn't ^10, but something lower. Anyone ever have such a meltdown with ^10 clay/glaze? Thank you for any input you might be able to provide. I remain clueless! Link to comment Share on other sites More sharing options...
Pres Posted January 5, 2012 Report Share Posted January 5, 2012 I fired Miller 510 clay to ^04, glazed with a ^9/^10 glaze, and my pieces melted into beautiful pools of color! Consensus is that the clay wasn't ^10, but something lower. Anyone ever have such a meltdown with ^10 clay/glaze? Thank you for any input you might be able to provide. I remain clueless! Sounds to me like you have a mislabeled clay. Miller 510 is specified as a ^8-^10 clay. Where did you get it? Do you have the original box? If you purchase this clay from a supplier, I would take the photos, or shelf with the receipt for the order back to your supplier asking for some form of reimbursement. It may take a while, but well worth it to pursue. Even over firing your kiln by a cone or two would not end up in a puddle-just bloated ware. Link to comment Share on other sites More sharing options...
Matt Oz Posted January 5, 2012 Report Share Posted January 5, 2012 Could be a eutectic formed at the clay-glaze interface, thus lowering the maturation point of the clay body. "just kidding" - I agree with Pres. Clay nerd humor Link to comment Share on other sites More sharing options...
Guest JBaymore Posted January 5, 2012 Report Share Posted January 5, 2012 http://www.lagunaclay.com/clays/northeastern/wc618.php Could you have misread 210? best, ..............john Link to comment Share on other sites More sharing options...
minspargal Posted January 6, 2012 Report Share Posted January 6, 2012 I saw that happen with an 04 clay fired to cone 10 at school. It made a puddle, the professor was not exactly thrilled to have the shelves ruined by a grad student. Link to comment Share on other sites More sharing options...
midnight_potter Posted January 9, 2012 Report Share Posted January 9, 2012 I fired Miller 510 clay to ^04, glazed with a ^9/^10 glaze, and my pieces melted into beautiful pools of color! Consensus is that the clay wasn't ^10, but something lower. Anyone ever have such a meltdown with ^10 clay/glaze? Thank you for any input you might be able to provide. I remain clueless! Link to comment Share on other sites More sharing options...
midnight_potter Posted January 9, 2012 Report Share Posted January 9, 2012 There is a mistake somewhere. Did you fire to cone 10 or cone 04? I cannot believe that a cone 10 glaze would melt at cone 04 - they hardly melt at cone 10. The cone 04 clay could have acted as part of the glaze at cone 10 and that I would believe. I use Miller 910 or Miller 900 for a cone 10 body which survives cone 10 pretty well - although not nearly as well as the original Miller which was sold to Laguna years ago and which Laguna has mucked about to produce a puny version of the original. The only time I had a major meltdown like that was the time a feldspar was mislabeled and I had put whiting in the glaze instead of feldspar and the whole lot of christmas pots melted all over the shelves and put me out of business for weeks as we tried to recoup all the furniture and remake all the ware. We need more information to answer your question. Link to comment Share on other sites More sharing options...
macdoodled Posted January 20, 2012 Report Share Posted January 20, 2012 midnight potter , Is that possible? did you say your glaze caused the clay to also melt? Link to comment Share on other sites More sharing options...
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