I am extremely new to the ceramics community and I recently purchased an electric kiln. I have been making stoneware vases in the shape of bodies which in places are particularly thick (1.5 inches maybe at the base).
I had left the greenware for about a week before attempting a bisque fire. I had previously fired bowls in this kiln (cone 05) and none had cracked or had any issues.
Unfortunately when I came to open up my kiln filled with these vases many of them had either cracked in linear type chips or seemingly exploded completely (small shards shattered around). I have r