aaron cortelyou on tue 11 may 10
I've been trying to find an answer to this question with no luck so
I'm going to bother you guys with it. I've been making very large (3ft
by 3ft) porcelain slabs for drawing on with underglaze pencils. I've
also been making them extra thing (about 1/8th and inch). I'm using a
cone 6 grolleg paper clay. What in your experience is the highest I
can bisque these at where they'll still accept glaze in a second
firing? I would test it but this stuff is expensive! I want to
increase the bisque temperature so the slabs with have a greater
tensile strength and will be (slightly) more resistant to breaking
while I'm working on them.
Thanks a million, you guys are the best.
Aaron
Angela Davis on tue 11 may 10
We could all have a guess at what cone would work best in your situation
but the only real way to know is to test fire some tiles. They don't have
to be
9 ft sq, just make some 6x6 inch to test at various temps for the results
you want.
My guess would be cone 2. Isn't paperclay wonderful?
Angela Davis
in Homosassa FL
----- Original Message -----
From: "aaron cortelyou"
To:
Sent: Tuesday, May 11, 2010 6:07 PM
Subject: So peeps, I have a question about bisque firing
> I've been trying to find an answer to this question with no luck so
> I'm going to bother you guys with it. I've been making very large (3ft
> by 3ft) porcelain slabs for drawing on with underglaze pencils. I've
> also been making them extra thing (about 1/8th and inch). I'm using a
> cone 6 grolleg paper clay. What in your experience is the highest I
> can bisque these at where they'll still accept glaze in a second
> firing? I would test it but this stuff is expensive! I want to
> increase the bisque temperature so the slabs with have a greater
> tensile strength and will be (slightly) more resistant to breaking
> while I'm working on them.
>
> Thanks a million, you guys are the best.
>
> Aaron
aaron cortelyou on wed 12 may 10
Yes, paper clay is wonderful. It's the best clay for slab making I"ve
ever used by a large margin. You can get away with murder. I often
have to check myself since I'm used to normal groggy stoneware which
can't tolerate uneven drying, uneven thickness, stretching or much
rolling out with out warping and cracking. Paper clay, you can roll
and stretch it out to a level tha'ts almost translucent and it will
fire fine. Amazing.
On Tue, May 11, 2010 at 6:50 PM, Angela Davis wro=
=3D
te:
> We could all have a guess at what cone would work best in your situation
> but the only real way to know is to test fire some tiles. =3DA0They don't=
h=3D
ave
> to be
> 9 ft sq, just make some 6x6 inch to test at various temps for the results
> you want.
>
> My guess would be cone 2. =3DA0Isn't paperclay wonderful?
>
> Angela Davis
>
> in Homosassa FL
>
> ----- Original Message ----- From: "aaron cortelyou" =3D
>
> To:
> Sent: Tuesday, May 11, 2010 6:07 PM
> Subject: So peeps, I have a question about bisque firing
>
>
>> I've been trying to find an answer to this question with no luck so
>> I'm going to bother you guys with it. I've been making very large (3ft
>> by 3ft) porcelain slabs for drawing on with underglaze pencils. I've
>> also been making them extra thing (about 1/8th and inch). I'm using a
>> cone 6 grolleg paper clay. What =3DA0in your experience is the highest I
>> can bisque these at where they'll still accept glaze in a second
>> firing? I would test it but this stuff is expensive! I want to
>> increase the bisque temperature so the slabs with have a greater
>> tensile strength and will be (slightly) more resistant to breaking
>> while I'm working on them.
>>
>> Thanks a million, you guys are the best.
>>
>> Aaron
>
>
aaron cortelyou on wed 12 may 10
Oh, and thanks for you advice on the bisqueing temp. I'll try it out
on some slabs that are just about ready to be fired and I'll try cone
2. Don't worry though, I understand that it's a risk but I know that
the onus will be on me if it doesn't work.
Thanks again,
Aaron
| |
|
