If I understand your question you have clay that normally would fire at cone 10 and it has been bisqued. You want to put glaze on it that is meant to fire at cone 6. Sure you can do this as long as you fire at cone 6. You might not get the color of the clay that it would get at 10 but it will be fine. I have some 10 clay that I love but I only fire it at 6. I got it on sale so that is why I even have it.
Nina Davis Answered question June 22, 2025
Did you get your queation answered? If not, there are a couple people you could look up that teach glaze courses and info. Sue Mccleod based in British Columbia Canada or John Britt in the US. Also, Clayshare. These are all great teachers on the internet who have info on this sort of thing. I wish this platform was more active. I also miss the original Clay Con that happened during covid. that was amazing. I hope you vetyour question answered by someone who knows. I believe if you put a cone 6 glaze in a cone 10 kiln, the colours will all burn out or not be as expe ted and the properties of the glaze will be wonky. If you put cone 6 clay in yojr cone 10 it will melt and yoj will have a serious mess on your hands. Do not do that! lol.