Lovely vase came out with popped blisters all over it. (Electric kiln, B-Mix cone 5-6 clay, bisqued to 04. Then glaze fired to cone 6.)
I ground them down some with a dremel, covered each with 2 dabs of clear glaze and re-fired. Now the blisters look like the wart I had as a child, made of lots of little columns crammed up together. Really ugly, although one visitor said it was interesting, and I should just title it "Vase—Warts and All"
Maybe it needs to go to cone 7? Should I give it one more try, re-firing it again?? If so, should the whole pot get a new coat of glaze, rather than just over the warts?
Other pieces from the same clay but different glazes came out fine. The glaze was somewhat thick on this vase. Might that have caused the blisters?