ivor and olive lewis on wed 25 aug 10
I an considering modifying an existing kiln or constructing a temporary kil=
n
to do some test work on the Soda Glazing process.
Phil Roger's book is on order from the Library and this seems to be one of
the major sources. Any additional information or modifications of method
would be appreciated.
For example, when spraying the soda solution is the damper closed or does i=
t
remain open ?
If it is closed, how is long airflow restricted ?
Is heating curtailed when soda is introduced ?
If the dry powder method is used, how long does it take for the faggots to
disperse ?
In general terms, what sort of clay compositions respond best to this
treatment ?
Should clay body be enriched with additional fluxes ?
All information would be appreciated.
Sincere regards,
Ivor Lewis,
REDHILL,
South Australia
June on wed 25 aug 10
Ivor, unlike salt, there's no need to close the damper when using soda. I =
push the damper in and out several times to try to induce some air movement=
to help disperse the soda solution. I don't turn down the burners. That w=
ould only be necessary with salt since you'd be closing the damper.
As far as clay bodies, it depends on what you want in terms of body color a=
nd soda surface. If you want a good flashing body, then you don't want a bo=
dy with too much silica. If you want more of an orange peel effect, then yo=
u would want a body with higher silica to alumina ration over 3 to 1 ratio =
for this under 3 for flashing. In the 4 to 1 ratio range you might get a gl=
assier finish rather than an orange peel surface.
I wouldn't use dry soda unless you use the Gail Nichols method of using a w=
et and hardened mixture of soda water and whiting.
Regards,
June
http://www.shambhalapottery.com
http://www.shambhalapottery.blogspot.com
http://groups.yahoo.com/group/sodasaltfiring/
http://saltandsodafiring.ning.com/
Aug 25, 2010 07:07:11 AM, iandol@WESTNET.COM.AU wrote:
>I an considering modifying an existing kiln or constructing a temporary ki=
ln
>to do some test work on the Soda Glazing process.
>Phil Roger's book is on order from the Library and this seems to be one
>of
>the major sources. Any additional information or modifications of method
>would be appreciated.
>For example, when spraying the soda solution is the damper closed or does =
it
>remain open ?
>If it is closed, how is long airflow restricted ?
>Is heating curtailed when soda is introduced ?
>If the dry powder method is used, how long does it take for the faggots to
>disperse ?
>In general terms, what sort of clay compositions respond best to this
>treatment ?
>Should clay body be enriched with additional fluxes ?
>All information would be appreciated.
>Sincere regards,
>Ivor Lewis,
>REDHILL,
>South Australia
>
ivor and olive lewis on thu 26 aug 10
Dear June,
Thank you for your information which is most interesting and for your
direction to other sites. which I will access.
Sincere regards,
Ivor Lewis,
REDHILL,
South Australia
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