No ITC or soda, the discoloration of the kiln interiors is from the reduction atmosphere from the firings only.
Ya, it's great to have the small kiln...I use it a lot!
The following images are of chawan fired in a gas kiln, reduction cooled with mesquite charcoal and water which was introduced into the kiln at 2350 F. I wadded and tumble stacked these bowls.
have u tried different glazes besides these non iron colorant/shino looking glazes ?
some of the most interesting effects i've seen is w/ tenmoku and iron rich glazes in cooling reduction. crytallization on the surface, an amazing amount of depth.
tumble stacking ! COOL !
hey, if u want seashells, they make nice marks instead of wadding marks. the clean shells even contain a minute amount of salt. i can send some, let me know. the ones i have are very similar to the ones used in japan.
cooling reduction. first saw this technique demonstrated by nakazato takashi from karatsu. since his show 3 years ago in ginza (tokyo), i went to his studio in karatsu where he demonstrated the firing using an electric kiln and a small 'rat tail' burner inserted at the bottom to create a 'cooling reduction' atmosphere thru carbon monoxide. then sensei proceeded to stick out his hand, as if he needed payment for this. so i just gave him 'five'. he didn't look amused. hehe !
did you do a body reduction at 1600 or so ? or did you fire in oxidation until cone 10 ? water reduction/ hydrogen reduction is cool ! the more reading i do about the tang dynasty kilns, the more i am intrigued w/ the process.
moreover, i've had some interesting effects w/ copper glazes too. can't wait to do more on this.
cooling reduction is fun ! can't wait to do more ! the water is magical