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I know this has been posted before but I can't find the posts this am. One of my glazes cracks and drops off the pot soon after dipping. I have watered down the glaze but it is a tricky one, any drips do the above, and the rest of the glaze develops small Cracks and is friable. On a previous clay body it was fine. I know that the recipe would help here Frit 3134 50 Pot Feld 20 Ball clay C 20 Mag Carb Light 10 to which I add various colourants Tin Oxide 10 I vary this with ZIrc. for most of the deal. 1 -2 Cobalt Carb. Presuming the thickness is ok what else can I adjust?