Saturday, 31 May 2014
.....the firing as performance
The firing schedule was very different from mine - a slow rise in lightish reduction/neutral atmosphere till cone 8's were going. At this stage it became apparent that something bad was happening with the floor or props as the front stack began to teeter and lean forwards. Cone 8's went at the front sidestoke and sidestoking began, bringing the temperature up slowly throughout the kiln.
After around 24 hours at stoneware temps the front stack collapsed into itself and the stoking space behind it. Emergency caesarian was carried out to free up the stoking space, pots being removed with raku tongs. Some of these were rather good with a surprising build up of ash on their surfaces......ash and....salt! Yep, looked like a salt firing. It seemed that perhaps the wood that had grown at the site, being next to the sea and a large saltwater lake, had high sodium levels.
3 days and some early brick removal later and the kiln was opened.