Allyson May on tue 11 sep 07
I have a question for all you clayart folks with more knowledge and =
experience than I have. I was glaze firing to ^6 and my kiln was =
interrupted by a power failure. The program said it reached 2100*F and =
by looking at the cones that seems about right. ^6 about 2:00 on the =
top shelf and 2nd shelf but 3rd and 4th shelf its straight up. On =
bottom shelf cone five doesn't even show much of a bend. I would like =
to re-fire these pieces but I'm not sure what temp/cone to take them to. =
I know about heat work and that re-firing them to ^6 might over fire =
them. Any suggestions as to how I can save my pieces? Any suggestions =
would be greatly appreciated.
BTW: they are mostly ^6 porcelain from Standard.
Peace,
Allyson May
Stoney Creek Pottery
Bloomington, IN
Dannon Rhudy on tue 11 sep 07
Allyson said:
.......firing to ^6 and my kiln was interrupted by a power failure. ....
I would like to re-fire these pieces but I'm not sure
what temp/cone to take them to. Any suggestions.....
Allyson, re-fire the pieces to cone 5, and that should
take care of it. You could go to 51/2, probably.
The just follow your normal cooling program.
Your kiln is firing fairly unevenly. Can you slow
your firings, or arrange your shelves in a fashion
that will permit better air flow?
Regards
Dannon Rhudy
Ron Roy on sat 15 sep 07
Hi Allyson,
Probably too late - I've been out of town.
Just use the same cones again - they have already measured the heat work
done during the first firing - and will take that into account for the next
firing - whitch will have to be a bit shorter to get the same results.
RR
>I have a question for all you clayart folks with more knowledge and
>experience than I have. I was glaze firing to ^6 and my kiln was
>interrupted by a power failure. The program said it reached 2100*F and by
>looking at the cones that seems about right. ^6 about 2:00 on the top
>shelf and 2nd shelf but 3rd and 4th shelf its straight up. On bottom
>shelf cone five doesn't even show much of a bend. I would like to re-fire
>these pieces but I'm not sure what temp/cone to take them to. I know
>about heat work and that re-firing them to ^6 might over fire them. Any
>suggestions as to how I can save my pieces? Any suggestions would be
>greatly appreciated.
>BTW: they are mostly ^6 porcelain from Standard.
>
>Peace,
>Allyson May
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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