Digital Studio on tue 20 may 08
I missed Clayart, but I really needed a break from it to delete the
2,000 or so emails in my Inbox. I can thank a busy finals week(s) at
college for that!
I've had a couple ceramics questions brewing since my last week at
college, so here goes:
I mixed up a batch of Cone 6 "Porcelain" (Translucent) I found in the
archives.
I never thought that it would be translucent, reading through the
archives and how people said it was rare to mix your own translucent
cone 6 body, but when I took out this paper thin bowl from a glaze fire,
I was astonished to see a perfect shadow of my hand through it as I held
it up to the light fixture...
I've tried Googling this question and searching the archives, but I
don't think it's been discussed. What actually makes porcelain
translucent? Is it the thinness and the fact that the glaze becomes part
of the clay and it isn't just coating the surface?
Next question.
I posted a college application essay about 3 or 4 months ago when I was
working on my application for Columbia College Chicago. I ended up
scrapping that whole essay and starting over on a completely different
question. I guess it was a good thing, seeing as I got my acceptance
letter a week ago! (Yay!)
I've been looking at classes to take this fall and ceramics is
definitely on my list, but I can't find much about the potters or
ceramics studio on the school's website. Does anyone know some
information about the ceramics department there? (One of the professors
is probably on the Clayart list anyways, haha!)
Thanks, everyone!
-Kendra
--
Kendra Bogert
www.digital-studio.biz
641-208-6253
Curtis Benzle on wed 21 may 08
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Hi Kendra:
I agree with Hank's advice--especially the part about getting all the metals
out of your clay. I would suggest trying a combination of
feldspars---including Neph Sye. I have been working in this material for
30+ years and while my information is more empirical than strictly
scientific, there is something to say for experience. That being said, you
might try pushing your kaolin content down as low as you can(mine is 20%)
and then augmenting plasticity with v-gum T. You won't have much of a
throwing body left(to say the least) but it should be translucent. If you
want more technical information about the molecular nature of translucent
porcelain please email me(curtisbenzle@gmail.com) and I will send you some
rather tedious, but interesting information. Good luck....
curt
benzleporcelain.com
On Tue, May 20, 2008 at 10:36 PM, Digital Studio
wrote:
> I missed Clayart, but I really needed a break from it to delete the
> 2,000 or so emails in my Inbox. I can thank a busy finals week(s) at
> college for that!
> I've had a couple ceramics questions brewing since my last week at
> college, so here goes:
> I mixed up a batch of Cone 6 "Porcelain" (Translucent) I found in the
> archives.
> I never thought that it would be translucent, reading through the
> archives and how people said it was rare to mix your own translucent
> cone 6 body, but when I took out this paper thin bowl from a glaze fire,
> I was astonished to see a perfect shadow of my hand through it as I held
> it up to the light fixture...
> I've tried Googling this question and searching the archives, but I
> don't think it's been discussed. What actually makes porcelain
> translucent? Is it the thinness and the fact that the glaze becomes part
> of the clay and it isn't just coating the surface?
>
> Next question.
> I posted a college application essay about 3 or 4 months ago when I was
> working on my application for Columbia College Chicago. I ended up
> scrapping that whole essay and starting over on a completely different
> question. I guess it was a good thing, seeing as I got my acceptance
> letter a week ago! (Yay!)
> I've been looking at classes to take this fall and ceramics is
> definitely on my list, but I can't find much about the potters or
> ceramics studio on the school's website. Does anyone know some
> information about the ceramics department there? (One of the professors
> is probably on the Clayart list anyways, haha!)
>
> Thanks, everyone!
> -Kendra
>
>
> --
> Kendra Bogert
> www.digital-studio.biz
> 641-208-6253
>
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Hi Kendra:
I agree with Hank's advice--especially the part about getting all the metals out of your clay. I would suggest trying a combination of feldspars---including Neph Sye. I have been working in this material for 30+ years and while my information is more empirical than strictly scientific, there is something to say for experience. That being said, you might try pushing your kaolin content down as low as you can(mine is 20%) and then augmenting plasticity with v-gum T. You won't have much of a throwing body left(to say the least) but it should be translucent. If you want more technical information about the molecular nature of translucent porcelain please email me(curtisbenzle@gmail.com) and I will send you some rather tedious, but interesting information. Good luck....
curt
benzleporcelain.com
On Tue, May 20, 2008 at 10:36 PM, Digital Studio < kendra@digital-studio.biz> wrote:
I missed Clayart, but I really needed a break from it to delete the
2,000 or so emails in my Inbox. I can thank a busy finals week(s) at
college for that!
I've had a couple ceramics questions brewing since my last week at
college, so here goes:
I mixed up a batch of Cone 6 "Porcelain" (Translucent) I found in the
archives.
I never thought that it would be translucent, reading through the
archives and how people said it was rare to mix your own translucent
cone 6 body, but when I took out this paper thin bowl from a glaze fire,
I was astonished to see a perfect shadow of my hand through it as I held
it up to the light fixture...
I've tried Googling this question and searching the archives, but I
don't think it's been discussed. What actually makes porcelain
translucent? Is it the thinness and the fact that the glaze becomes part
of the clay and it isn't just coating the surface?
Next question.
I posted a college application essay about 3 or 4 months ago when I was
working on my application for Columbia College Chicago. I ended up
scrapping that whole essay and starting over on a completely different
question. I guess it was a good thing, seeing as I got my acceptance
letter a week ago! (Yay!)
I've been looking at classes to take this fall and ceramics is
definitely on my list, but I can't find much about the potters or
ceramics studio on the school's website. Does anyone know some
information about the ceramics department there? (One of the professors
is probably on the Clayart list anyways, haha!)
Thanks, everyone!
-Kendra
--
Kendra Bogert
www.digital-studio.biz
641-208-6253
------=_Part_8916_6522921.1211403184955--
Lee on wed 21 may 08
Try to find a copy of John Reeve's republished articles on porcelain,
titled: Porcelain. True porcelain was what he worked on when he was
in England. I don't know if I have mine here in the USA. It has
several recipes.
One of the article is found in:
John Reeve, "More
Notes on Porcelain" in Studio Potter. Vol. 6 No. 2. This whole issue is
like a bible for those who seek the special quality called porcelain.
--
--
Lee Love
in Minneapolis http://mashikopots.blogspot.com/
"I learned this, at least, by my experiment: that if one advances
confidently in the direction of his dreams, and endeavours to live the
life which he has imagined, he will meet with a success unexpected in
common hours." -- H.D. Thoreau
Hank Murrow on wed 21 may 08
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On May 20, 2008, at 9:36 PM, Digital Studio wrote:
>
> I mixed up a batch of Cone 6 "Porcelain" (Translucent) I found in the
> archives.
> I never thought that it would be translucent, reading through the
> archives and how people said it was rare to mix your own translucent
> cone 6 body, but when I took out this paper thin bowl from a glaze
> fire,
> I was astonished to see a perfect shadow of my hand through it as I
> held
> it up to the light fixture...
> I've tried Googling this question and searching the archives, but I
> don't think it's been discussed. What actually makes porcelain
> translucent? Is it the thinness and the fact that the glaze becomes
> part
> of the clay and it isn't just coating the surface?
Dear Kendra;
There are several on this list who will be more help than I, but I
think if you have low to no titania in your body, very little iron,
and the body has enough alkaline flux....... you will have
translucency. In addition, if your glaze has low to no titania, you
will have the lovely blue celadon that Jingdezhen became famous for
during the Sung period. These are difficult 'ifs' to achieve, and it
seems you have hit it on the first try. If you want to go further,
start by subbing Grolleg(or other English kaolin) for the kaolin in
your recipe. Keep the ball clay to a minimum, and use a potassium
spar for the alkaline component. In your glaze, use Grolleg instead
of American kaolins, as they have too much titania.
Cheers, Hank in Eugene
Here's an example I made..... though with a high Lithium glaze on it.
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marci Boskie's Mama =^..^= on sun 25 may 08
Kendra wrote:
>What actually makes porcelain
> > translucent? Is it the thinness and the fact that the glaze becomes part
> > of the clay and it isn't just coating the surface?
> >
First of all, Im glad to have Clayart back. I havent had time
to have withdrawal symptoms because Ive
been on the road non stop since the end of last month ..
and am headed out again in 2 days.. so Im catching up as
fast as I can ... but IM glad that the major issues were able
to be worked out.
Its a huge jog.. and kudos to those who step up and do it
and make this wonderful forum available for us. Its a pretty
thankless task ... but thank GOd , there are folks
like Mel and the other mods who are willing to do it..
I always understood ( for
what THAT"S worth :O) ) that porcelain ( and bone china )
was translucent because it was fired to
vitrification to a nearly glassy state ...
Marci Blattenberger Boskie's Mama =^..^=
http://www.marciblattenberger.com
marci@ppio.com
Porcelain Painters International Online http://www.ppio.com
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