Ivor and Olive Lewis on tue 18 apr 06
Dear Lili,
Muffle Kilns; how are these classified and where do they fit in with =
current practice. Good question.
I recall seeing somewhere long ago an illustration of a Muffle Kiln =
where flue tubes ran up the inside of the muffle chamber. No doubt they =
got hot and acted like radiating elements. I do not have access to a =
copy but there is probably something in Singer and Singer "Industrial =
Ceramics" about this. Being enclosed, sealed and without any form of =
external aspiration they no doubt fit into the "Neutral" division.
I suppose they will fit in to the scheme of things as a style of Sager =
Firing. Many people use saggars as an enclosed space for several =
reasons. Atmospheric modification is just one use. Keeping stuff clean =
is another. I can see saggars as a way of getting an oxygen enriched =
atmosphere. Something I must try!
Enjoy your week. Best regards,
Ivor
Ron Roy on wed 19 apr 06
One of my first experiences in Art College was to take a hammer and break
out all the ceramic tubes in a muffle kiln - so we could fire reduction.
Those tubes isolated the ware from any contact with flame or any reducing
atmosphere - in other words - oxidation firing in a gas kiln. Like a sager
- except the whole stacking space was "safe" from the fire.
I can remember asking the instructor - "are you sure you want me to do this?"
There was sure no way the damage could be undone.
RR
>Muffle Kilns; how are these classified and where do they fit in with
>current practice. Good question.
>I recall seeing somewhere long ago an illustration of a Muffle Kiln where
>flue tubes ran up the inside of the muffle chamber. No doubt they got hot
>and acted like radiating elements. I do not have access to a copy but
>there is probably something in Singer and Singer "Industrial Ceramics"
>about this. Being enclosed, sealed and without any form of external
>aspiration they no doubt fit into the "Neutral" division.
>I suppose they will fit in to the scheme of things as a style of Sager
>Firing. Many people use saggars as an enclosed space for several reasons.
>Atmospheric modification is just one use. Keeping stuff clean is another.
>I can see saggars as a way of getting an oxygen enriched atmosphere.
>Something I must try!
>Enjoy your week. Best regards,
>Ivor
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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