jim wightman on tue 8 feb 11
Hello,
I am using Cynthia Bringle's slip recipe on Red B-mix with grog (cone 6
clay). I've used the slip on any number of clay bodies and I've never had a
problem. My friend invited me to make tiles for a show and I had just
purchased the B-mix so I made the tiles with it. I pulled them out of the
bisque kiln yesterday and some of the slip had popped off some of the tiles
- not all of them but naturally the ones I liked the best. I'm wondering
why this happened. I'm going to try to decorate them and put a clear glaze
(from MC6G) on them. I'm wondering if I'm going to be in for bigger trouble
if I do this. Might the slip pop off with the glaze? We've had some really
frigid weather and my studio was freezing cold. Would that have affected it
after it was dry?
I know I should have tested - I've learned my lesson.
Thanks for your help.
Karen Nakakihara
Alpine, Texas
Snail Scott on wed 9 feb 11
On Feb 8, 2011, at 2:48 PM, jim wightman wrote:
> I am using Cynthia Bringle's slip recipe on Red B-mix with grog (cone =3D
6
> clay). I've used the slip on any number of clay bodies and I've never =3D
had a
> problem...I made the tiles with it. I pulled them out of the
> bisque kiln yesterday and some of the slip had popped off some of the =3D
tiles...
Well, as a guess, it may be because B-mix=3D20
is halfway to beng a porcelain, and has a=3D20
higher shrinkage and CoE than many standard=3D20
bodies.=3D20
Wouldn't be my first choice for tile, anyhow. I'd=3D20
prefer a less plastic body for that, but of course=3D20
that's personal. If you like it for tile, carry on, but=3D20
a new engobe recipe may be in order if you do.=3D20
A new clay body (or your old one again) might be=3D20
preferable, but harder to change on short notice.
-Snail=3D
John Goode on fri 11 feb 11
Hi Snail
What clay body would you use for a handmade ceramic tile @ cone 6?
John Goode
On Wed, Feb 9, 2011 at 11:19 AM, Snail Scott wro=
te:
> On Feb 8, 2011, at 2:48 PM, jim wightman wrote:
> > I am using Cynthia Bringle's slip recipe on Red B-mix with grog (cone 6
> > clay). I've used the slip on any number of clay bodies and I've never h=
ad
> a
> > problem...I made the tiles with it. I pulled them out of the
> > bisque kiln yesterday and some of the slip had popped off some of the
> tiles...
>
>
> Well, as a guess, it may be because B-mix
> is halfway to beng a porcelain, and has a
> higher shrinkage and CoE than many standard
> bodies.
>
> Wouldn't be my first choice for tile, anyhow. I'd
> prefer a less plastic body for that, but of course
> that's personal. If you like it for tile, carry on, but
> a new engobe recipe may be in order if you do.
> A new clay body (or your old one again) might be
> preferable, but harder to change on short notice.
>
> -Snail
Snail Scott on fri 11 feb 11
On Feb 11, 2011, at 1:28 PM, John Goode wrote:
> Hi Snail
> What clay body would you use for a handmade ceramic tile @ cone 6?
Something with considerable grit and low shrinkage,
to resist warping and make accurate sizing of the
project a little easier. Who needs plasticity for tile?
-Snail
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