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 researched and apparently it can be an issue with moisture however they appeared to be bone dry from colour and tapping them.
I was wondering if anyone had any knowledge they could share with me over whether the issue is more one of thickness, temperature or potentially moisture content? I was in love with these vases and spent hours working on them and would be devastated if there was not a way around me making more of them.
(apologies if this is not the correct place to put on this website- I have never used it before!)
Thank you in advance!