gari whelon on tue 7 sep 99
I havent noticed any responses to merrie, I don't have the answer but have
similar questtions.
When and how do cones malfunction.
I have seen cases where cone 6 is down, 8 is unmoved and 9 is down, but not
often.
At the Tozan, in a long firing it has at times been felt the cones are
frozen and are not going to move. frozen because of ash or carbon deposits.
What is the scientific, if there is one, explanation for this and what steps
would you take to ensure reaching temperature? I know that you need to read
colour and glaze, but these old eyes already hurt and I'm not there yet to
confidently call on colour.
How common are frozen or malfunctioning cones in wood firing (or otherwise)?
Would more cone packs in more places help? or would that just give you
better info for that area/shelf?
Like I said, I'm no expert and would sure like to know more.
Gari Whelon
Nanaimo British Columbia.
>----------------------------Original message----------------------------
>During my last wood firing, after cone 8 was down throughout the kiln, we
>sprayed soda into the flame. There were conflicting opinions among the
>potters here about how the soda might effect the cones. What do yall think
>?
> My, My....a technical question from Merrie !
>
>
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