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reduction in electric kiln question

updated tue 21 aug 01

 

Tom Yocky on mon 20 aug 01


I've searched through the archives with poor results
to find an answer to something I've kept in the back
of my brain for a while. So here goes.
Quite some time ago I read in a book specializing in
Electric Kilns (I don't remember the title or author)
something about creating a reduction atmosphere in an
electric kiln by dropping in combustable material at
the end of the heating cycle. I rememer the book
suggested charcoal because it will burn a longer time
as compared to other combustables, thus maintaining
the reducing atmosphere longer. Does this work? Has
anybody tried it? How did you do it? Will it ruin the
kiln bircks or elements?
Thanks all for all the help you've already given me.
Tom Yocky

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Dannon Rhudy on mon 20 aug 01


...I read in a book specializing in
>Electric Kilns (I don't remember the title or author)
>something about creating a reduction atmosphere in an
>electric kiln by dropping in combustable material
.... Will it ruin the
>kiln bircks or elements?

Yes, you can add combustible materials to an
electric kiln to create a reduction atmosphere.
And yes, it will ruin your elements in short
order unless they have been specially treated
to prevent or forestall the effects of reduction
firing. You can read an article regarding a
way to make your electric kiln reduce in Pottery
Making Illustrated, sometime within the last year.
Look up their website and check it out, or perhaps
someone will know the issue. Authors were Mel
Jacobson and Bill Jones. Mel made several posts
to the list regarding this, too.

In addition to shortening the life of your kiln,
combustibles can put some very noxious fumes into
the air. For indoor kilns, this can be a significant
problem. There really are endless posts on this
subject in the archives, worth spending some time
to find.

regards

Dannon Rhudy