Pretty much everything that could have gone wrong with this last firing has gone wrong.
I’m picking up some dry materials to start testing my base glazes. At least I know that my chosen clay body tolerates overfiring very well.
I’m getting some witness cones (5, 6 and 7) to stack on each shelf and see what they do. I don’t understand whats happening yet. Olympic says that the kiln usually underfires if something is wrong rather than overfiring. The company that makes my clay body says that blistering happens from overfiring. The cones should tell the tale though. I need to get that straight before I drive myself crazier than usual.