Let me turn your attention to Exhibit A: it ran, yes, but the dominant glaze flaw here is crawling, caused by a cool bisque. This casserole was at the top of the kiln during the bisque firing.
And now, look to Exhibit B: A rutile blue glaze that has historically been stable to ▲11, fully down; in this case it ran like a mad bastard, in the bottom of the load. Ladies and gentlemen, I think we are looking at ▲12 or more.
Incidentally, I like both of these pots, though they will need some grinding, and so must necessarily be seconds. The flaws do not compromise the function in any way, so these will be bargains at half price: $22 each.So, nine up top, twelve at bottom...what's a poor potter to do? I had a good suggestion, from my dear friend Paul Mahoney of Friendship River Pottery: adjust the bag wall. I am thinking to raise it two rows or more, forcing the flame (and soda) upward before it can find its way out the flue.
I also plan on making better use of the passive dampers next time around.
Keep those cards & letters coming!