Candace Jacobs Pottery

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I have been using this same clay for years. Continental recently had to change their clay recipe. I have been struggle with the same issue recently. I have only recently realized after listening to an episode of For Flux Sake that the issue may be the clay body. During the episode it was mentioned that talc in the clay body will cause this issue. Continental had to change their low fire white recipe because of a mine closure. They sales person told me the ingredient that cause this change was talc. I am sure you know that firing your (clay as some one else stated) to cone 4 is not a viable solution to our problem. I am trying though, to bisque fire to 02 and then glaze fire to 05. I don't have results yet. I am also going to try a Laguna Clay to see if that makes a difference in the flaking. My glaze requires a slip there has been another variable for me to consider. I am using Hirsh Satin Matte glaze. It is literally just falling off many of the pots. However there are a small percentage of pots that they clay does not flake off. I cannot find a consistent factor to success and failure. This new clay recipe has also cause a yellow tone under my glazes and I have been battle to fix that as well. I am hoping as always that I have found the solution, but I won't know this until I have a few more kiln firings.