ANT KAR on sun 15 feb 98
Does anyone know if a piece has been glaze fired, then acrylic paint applied on
part of the piece, could this piece be glazed again and refired? Would the
glaze stick to the paint? Just wondering if anyone has done this, before I try
it myself. Thanks,
Karen in western NY where it is now raining, too!
douglas gray on mon 16 feb 98
In message ANT KAR writes:
> ----------------------------Original message----------------------------
> Does anyone know if a piece has been glaze fired, then acrylic paint applied
> on
> part of the piece, could this piece be glazed again and refired? Would the
> glaze stick to the paint?
If you are wanting to get rid of the acrylic paint, I would runit through the
bisque fire to burn it off. The acrylic paint won't survive the heat and should
burn off completely.
As for re-glazing a pot that has be fired, the difficulty lies in getting a good
application of glaze the second time around. The first glaze firing has sealed
the clay body so that it will no longer absorb water. So when you dip this
piece into glaze, very little if any will stick to the surface.
The solution I use to re-glaze a piece is to heat it in the electric kiln until
it is as hot as I can possibly stand to touch. Then I apply the glaze while it
is still hot. Instead of absorbing the water, the clay actually evaporates some
of the water giving you a thicker application of glaze. If it is still hot, you
might even be able to double dip it, provided the first coat is completely dry.
hope this helps, grab those oven mits.
doug
============================================================================ =)
Douglas E. Gray, Assistant Professor of Art
P.O. Box 100547
Department of Fine Arts and Mass Communication
Francis Marion Univeristy
Florence, South Carolina 29501-0547
dgray@fmarion.edu
803/661-1535
Jeff Lawrence on tue 17 feb 98
>In message ANT KAR writes:
>> ----------------------------Original message----------------------------
>> Does anyone know if a piece has been glaze fired, then acrylic paint applied
>> on
>> part of the piece, could this piece be glazed again and refired? Would the
>> glaze stick to the paint?
>
Maybe this is a tangent to the question, but...
I was thinking that I could just burn off some gray paint (100% acrylic
solid) from some returned fixtures (no glaze on first) and have a nice clean
bisque finish to give some other lucky customer. However, the gray paint
turned into a soft mustard sintered-on coating.
The resultant coating was absorbent and probably could have been glazed
again, but that persistent color made me reserve these pieces for a
different paint job. Who knows what effect it would have had on a subsequent
glaze? Probably something incredible...
Anybody know what the colorant is that is gray pre-firing and pale yellow
after? Yet another thing left out of the literature/philosophy curriculum...
Jeff Lawrence
jml@sundagger.com
Sun Dagger Design
Rt 3 Box 220
Espanola, NM 87532
ph 505-753-5913
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