You're right, the large rectangles in the first piece were Turquoise (0116). The first firing schedule was:
200 dph to 1225, 1 hr hold
AFAP to 1490, 40 min hold
AFAP to 900, 2 hr hold
50 dph to 800
100 dph to 700, off.
The second firing was the same except that the hold at process temperature was 35 min. This may seem long but in the first firing the strips of pattern were 9 mm and I wanted to make sure they flattened to the same level as the Turquoise sides which, at 2 layers, were only 6mm thick.
My kiln shelf is mullite and I use Bullseye primer. As I mentioned in my first post, the shelf primer was not fresh, but the sheet of Thinfire on it was. I rarely put fresh primer on my shelves for each firing, but I always use Thinfire, and I've never had any result like this before.
The photo I've attached is of the first piece, top side, which is distorted so I plan to use the shelf side.
- DSCN3208 em.jpg (53.34 KiB) Viewed 11661 times