Hopefully the rest will continue to survive.
Now more relaxed I can enjoy the positives, but I have to think about the negatives to plan the next firing. I've never had dunting before and also a weird fault where the glaze seems to craze not only down to the clay but within itself, so that ash crystals on the surface feel rough and lift off in a little shard of glaze. Very sad that this has happened on an otherwise gorgeous piece.
Some new glazes include plenty from the Malverns. This is a dark semi matt glaze based on the Precambrian diorite and Triassic sandstone there.