The first in a series Iâm excited to share â a stoneware vase fired in a firebrick saggar chamber, packed with charcoal and organic material, inside a gas kiln to induce localised reduction and surface marking.
During a recent wood firing with
@nickschwartzceramics and
@jrthompson.artist , we ended up making more pots than could fit inside Gamanvi (the wood firing kiln at
@anvipottery ) . Nick suggested we try firing the excess pieces in a charcoal saggar within a gas kiln. Naturally, everyone was curious â which potter doesnât want to experiment?
We built a small chamber on the bottom shelf using firebricks, filled it with charcoal, and placed the pots on wads, either on the charcoal bed or directly on the shelf. We layered in hay and more charcoal, then capped it with another shelf â creating a contained micro-atmosphere within the kiln.
This vase is made with
@claystationbangalore âs cone 10 stoneware, âWhite Canvas,â to which I added coarse grog. At the bone dry stage, I applied a thin porcelain slip and later scratched into it with a dry, rough brush. I then added Johnstonâs flashing slip around the neck and shoulder in a restrained manner, followed by an iron oxide wash along the rim and shoulder.
As expected, the flashing slip remained inactive in this environment, since it wasnât wood-fired. The iron oxide, however, responded beautifully, bringing out warm red and orange tones. The carbon trapping is quite pronounced â a direct result of the enclosed, reduction-heavy saggar chamber.
I didnât expect much from this piece, but itâs ended up being one of my favourites from the charcoal firing.
What are your thoughts? Have you tried something similar? How do you feel about this kind of surface?
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{charcoal saggar, reduction firing, gas firing, experimental, high fired cermics, pottery, awarestudioproducts, awarestudio, bangalore}