Liz Willoughby on tue 30 mar 04
Claybuds,
Just to make this a legit e-mail to clayart, I have a question for
John Britt about his lecture on oil spot glazes, or for anyone else
that was there and remembers. He has been firing the glazes up to
cone 9, (I think that is right), in oxidation, then putting the kiln
in reduction for HOW LONG? and WHY? to smooth out the bubbles? I
used to have a nice oil spot glaze when I fired electric, tried the
glaze in reduction, knew it wouldn't work, and it didn't, just
curious. Kind of ugly metallic look. Hope you are browsing the list
John, I enjoyed your lecture. Should have taken pen and paper with
me. Looking forward to your new book on glazes, and am enjoying
using your Ball Celadon glaze from the Lark book, "The Ceramic Glaze
Handbook", by Mark Burleson. It fits my porcelain very well.
Now,
Mel says that my micro hairs will do, but you know I have always
liked a bit of red. Maurice, I think you should get some of that
stuff from the drug store, and color some of those hairs red, and
send them to me, then I will be happy. And geez, for sure the
guard/o/matic will be very impressed, and is sure to let me in, maybe
even twice!!!!!
Let me tell you that Kurt's new e-mail address << 1eyedpots@blah blah
blah >> is not right. Can't understand it, so Kurt, again, I very
much like your mug. (You have to do something about that Honorary
PHD friend of yours, he is trouble!, sweet though.)
>Liz says:
what a bummer, I haven't got any chest hairs.
Maurice says:
>
>Would you prefer white, grey, or uhhh dark grey.
>If my memory weren't going down the tubes, I'd have vivid
>remembrances of a few reddish chestal hairs I used to have, too.
>Shoulda kept a few. Who knew?
Mel says:
>actually liz, that goes for me too.
>but, the quard/o/matic does
>examine micro hairs.
>
>in fact, watch from kurt's new email
>address:
>
>1eyedpots@blah blah blah.
Have I got nothing better to do than sit here and poke fun. Well
folks, I have been ill, and clayart is making me giggle a lot these
days.
But I do feel sorry for Michael. Michael, please join in next year in
the clayart room, and please contribute a mug. Would I love a soda
fired, (or was it salt fired, or was it wood fired) mug of yours.
How about a trade next year, for a shino or tenmoku or celadon?
And Joyce, my dear, you did not know, it is o.k.
I guess this post must be at least as long as Phil's and Kelly's by
now, and yes thank you to Ron, who bought us all a wonderful meal at
Tarkington's.
I am done,
Meticky Liz
John Britt on tue 30 mar 04
Liz,
Glad you liked the lecture. It seemed to go well. Thankfully, Paul Lewing
told me my zipper was down before there was too much embarrassment.
Yes, I fire the oil spot to cone 9 or 9 =BD in oxidation, then put it in
reduction (0.7 on the oxyprobe). I keep it there until cone 10 is down or
until the glaze smoothes out. Sometimes I go to cone 11. It all depends on
what you can see in the spy hole or with your draw tiles.
This stops the glaze from bubbling and smoothes out the bubbles that are
there. It also helps create the hare fur effect.
Hope that helps,
John
Mark & Sylvia Mondloch on wed 31 mar 04
John wrote:
Yes, I fire the oil spot to cone 9 or 9 =BD in oxidation, then put it in
reduction (0.7 on the oxyprobe). I keep it there until cone 10 is down or
until the glaze smoothes out. Sometimes I go to cone 11. It all depends o=
n
what you can see in the spy hole or with your draw tiles.
This stops the glaze from bubbling and smoothes out the bubbles that are
there. It also helps create the hare fur effect.
Hi John,
Are you saying that the reduction helps smooth out the bubbles in this
glaze? or do you wait to reduce then because you don't want to earlier a=
nd
it's just the increased temp that smoothes it out? It seems like
understanding this could give some insight into dealing with smoothing ou=
t
unwanted bubbles in any glaze even if not specifically looking for hare f=
ur
effect.
Sorry- I realize you probably covered all this in your lecture.
Sylvia
John Britt on wed 31 mar 04
Sylvia,
No this does not really apply to all glazes. See :
http://www.ceramicsmonthly.org/mustreads/oilspot.asp
It is specifically for oxidation and iron. Then reduction at the end.
Hope that helps,
John
Marcia Selsor on thu 1 apr 04
John's presentation at NCECA was really great and foretold the coming of
his new book!!
Marcia Selsor
back on clayart in Italy
John Britt wrote:
> Sylvia,
>
> No this does not really apply to all glazes. See :
>
> http://www.ceramicsmonthly.org/mustreads/oilspot.asp
>
> It is specifically for oxidation and iron. Then reduction at the end.
>
> Hope that helps,
>
> John
>
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