Phil Davenport on tue 24 may 05
I have done some testing of the glazes listed in the Mastering Cone 6
book and am seeing a couple of problems. One is pin holes. I am doing
a 20 minutes soak. Should I go longer? Is anyone else having this
problem?
I noticed some pin holes, as the glaze dried, and rubbed those areas
with my finger.
The other problem would be bare spots on the rims of cups. I did clean
the bisque ware before I started glazing and didn't see any cracking as
the glaze dried.
None of my test pieces had the bare spots and I was doing the 20 minute
soak. About the only difference is the thickness of the glazes. When
doing the initial testing the glazes were thicker. Since then I have
added additional water to the glazes.
Any help would be appreciated.
Phil Davenport
Garland, Tx
Steve Slatin on wed 25 may 05
Phil --
Some time back, I had the same problem -- changing my
bisque to cone 04 from cone 06 cured it. (A samaritan
who shall remain nameless suggested this.)
The theory was that the extra bisque heat burned out
the last of the combustibles from the clay so they
didn't interfere with the formation of the glaze,
IIRC.
Hope this helps --
-- Steve S.
--- Phil Davenport
wrote:
> I have done some testing of the glazes listed in the
> Mastering Cone 6
> book and am seeing a couple of problems. One is pin
> holes. I am doing
> a 20 minutes soak. Should I go longer? Is anyone
> else having this
> problem?
>
> I noticed some pin holes, as the glaze dried, and
> rubbed those areas
> with my finger.
>
> The other problem would be bare spots on the rims of
> cups. I did clean
> the bisque ware before I started glazing and didn't
> see any cracking as
> the glaze dried.
>
> None of my test pieces had the bare spots and I was
> doing the 20 minute
> soak. About the only difference is the thickness of
> the glazes. When
> doing the initial testing the glazes were thicker.
> Since then I have
> added additional water to the glazes.
>
> Any help would be appreciated.
>
> Phil Davenport
> Garland, Tx
>
>
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Steve Slatin --
Some men will do here for diamonds what some men will do here for gold
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