I recently tried to see how fast I could fire my glaze kiln. I started with some glazes that do not require much reduction; white, temoku, iron wash. I used all my clay bodies that I use and both small and big pieces. Because I fire gas there was a small amount of reduction anyway, but for the most part I let the kiln breath and let it go as fast as it wanted to. My mentor looked at the results and thinks that for the most part it was fire very close to neutral. In the end I learn a bunch of stuff.
1. There is one stoneware that I use that has more organic material than I had thought, and had severe bloating in those pots.
2. The top shelf of my kiln is much cooler than the rest of the kiln. I knew this but with the exaggerated firing schedule it became very real.
3. My temoku glaze has a very wide range of firing temp maturity. I think it would go from cone 9-11 and still look great.
4, Even with the kiln going fast I had some reduction and some things turned out nice.
5. Iron wash come out pretty light when not in a full heavy reduction.
6. I think I can get a successful firing much faster than my current 10 hour schedule.
After the holiday rush I am going to try again and attempt a firing at 7 hours, I think that may be the sweet spot.
I made a video of the results in my you tube channel.
Reed Pottery. http://www.youtube.c...h?v=Zufz2XOPtRs
Has anyone else done an exercise like this?