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Why Soda Firing

The pots in a soda kiln usually don’t have much glaze on the outsides of them, they are glazed by the introduction on soda ash, which volatiles when it hits the flame and creates a glaze. The flame then carries the soda ash through the kiln and the pots become glazed wherever the flame and soda kiss the pots.

Here you see me spraying the soda ash which is mixed with boiling water, into the kiln at about 2200 degrees.

 The results can be greatly varied with this type of firing. For me, that's a big part of the fun of it. You never know with 100% certainty, what you will get from the kilns.

This pot shows where the glaze hit the surface and really added a nice difference in appearance. The green you see is a spearmint glaze that I used inside the pot and along the rim. The soda mixed with that glaze and made it very dark, almost black in some spots and almost white in others. You can also see where it kissed the shoulder of the vessel and the handles. The orange color is from a flas…

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