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yikes! overfired

updated sat 31 aug 96

 

Jeanette Harris on tue 6 aug 96

I just opened what was supposed to be a bisque fired kiln only to realize I
had put a 6 cone in the sitter instead of an 04. = : O

Some things that were attached with slip de-attached, one casserole bottom
cracked in the center and a bowl with a lid cracked down the side.

This was a 4-6 stoneware clay, reddish brown.

Can I glaze this? Will my 4-6 glazes fit? Should I try higher fire
glazes? I know that this has made the pieces less accepting of glaze
application--should I apply something else on the pieces first before the
glaze?

One interesting thing--Where the trim tool had burnished a lid, the result
in bisque was very interesting.

And I just tossed all the messages about burnishing--is that in the data base?

Another thing--this clay would really look nice in sculpture at this temp.
It's Clay Art Center's SPS. (Tacoma, WA)


Thanks, Jeanette Harris in Poulsbo, WA

Hertz Pottery on wed 7 aug 96

Call it a lesson learned the clay wont absorb the water in the glaze and it
might crack and fall off as it dries. so it looks like you have some 2nds on
your hands....
I would start over rather than tring to fix a problem lik that.
dont feel bad we all make mistakes....
Erik
>----------------------------Original message----------------------------
>I just opened what was supposed to be a bisque fired kiln only to realize I
>had put a 6 cone in the sitter instead of an 04. = : O
>
>Some things that were attached with slip de-attached, one casserole bottom
>cracked in the center and a bowl with a lid cracked down the side.
>
>This was a 4-6 stoneware clay, reddish brown.
>
>Can I glaze this? Will my 4-6 glazes fit? Should I try higher fire
>glazes? I know that this has made the pieces less accepting of glaze
>application--should I apply something else on the pieces first before the
>glaze?
>
>One interesting thing--Where the trim tool had burnished a lid, the result
>in bisque was very interesting.
>
>And I just tossed all the messages about burnishing--is that in the data base?
>
>Another thing--this clay would really look nice in sculpture at this temp.
>It's Clay Art Center's SPS. (Tacoma, WA)
>
>
>Thanks, Jeanette Harris in Poulsbo, WA
>
>
erik hertz

Pelly123@aol.com on thu 8 aug 96

If you want to try to refire the pots, you have to heat them and then dunk
them hot (cool enough to handle) into the glaze. This will make the glaze
dry immediately and smoothly on the pot...

Pelly