Monday, September 13, 2010
It took off really fast even on what I thought was the lowest setting, so it looks like it may be done by dinner time at this rate as long as there are no wind gusts to blow it out. Right now it's over 800F. My makeshift metal and kiln shelves surround seems to be doing alright under these no wind conditions.
Think I'll change the days studio plan and make up some glaze tests so I can do a soda firing in it tomorrow or the next day if weather permits, with some re-fires and glaze and slip tests. I've designed a couple of alkaline base glazes in the hopes I can get those lovely alkaline copper colors without crazing. Problem is when you add enough silica to lower expansion, that acidic nature of the silica changes the alkaline quality and you lose the colors; And even with enough silica, sometimes the alkaline content is too high and you still get some crazing Therefore, I keep testing. I probably should do some of Ian Currie's grid testing one of these day if I could only find more hours in the day.