Snail Scott on mon 1 oct 01
At 09:17 PM 10/1/01 EDT, you wrote:
>For the ones of you who sandblast which medium do you use to take off a thin
>layer of glaze? I have been unsuccessful using alumina oxide to remove
>layers. Thank you for any assistance.
In my experience, sandblasting to remove glaze
has been generally unsuccessful, because the
glaze tends to be more resistant than the clay
beneath, and the clay becomes deeply scarred
in the areas where 'breakthrough' occurred first,
even while other areas retain much of their glaze.
Removal of a thin, even layer of glaze will be
very difficult to achieve with a handheld sandblast
nozzle.
Interesting as a texture method for its own sake,
I suppose, but has definite drawbacks as a tool
for controlled glaze removal, IMHO.
-Snail
Regalos De Dios on mon 1 oct 01
For the ones of you who sandblast which medium do you use to take off a thin
layer of glaze? I have been unsuccessful using alumina oxide to remove
layers. Thank you for any assistance.
Marcia Selsor on tue 2 oct 01
We use a fine silica sand in the sand blaster which is contained and sealed tight
to avoid shooting this hazardous dust around.
Marcia Selsor
Regalos De Dios wrote:
> For the ones of you who sandblast which medium do you use to take off a thin
> layer of glaze? I have been unsuccessful using alumina oxide to remove
> layers. Thank you for any assistance.
>
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diane on tue 2 oct 01
I use silica sand or from our local agway it is
called playground sand. By adjusting the amount
of air coming through the compressor you can
make the sand come out in a thin and fast stream
or at a slower rate and more dispursed. You can use
vinyl or sandblast resist to protect areas that
you don't want blasted, a local sign shop could
possibly give you scraps of vinyl to test that out.
Diane
Wild Duck Pottery
www.awildsignco.com (no link to my pots yet)
Regalos De Dios on tue 2 oct 01
Thank you for all of the replies. My cabinet leaks and had hoped to stay away
from silica, but will try to tape the leaks and carry on. I have read that
some shinos will give lovely hidden colors if a thin layer of the glaze can
be stripped away. Do any of you ever use walnut shells? Thank you, Dorothy
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