Lynn Goodman Porcelain Pottery on sun 29 apr 07
On Apr 29, 2007, at 11:26 PM, Gay Judson wrote:
> Can anyone tell me how to glaze a bowl or cup with one glaze
> (color) inside,
> another glaze (color) on the outside and no overlap at the meeting
> at the rim?
> Do I wax the inside rim, over the glaze, before glazing the
> outside? Seems
> like that wax might spoil the inside glaze...TIA
> Gay Judson
I pour the inside, wax the line where the glazes will meet (and
around an inch down), then dip the outside. If your piece is really
even, you may not need to wax--just be very careful how you dip the
outside.
Lynn
Lynn Goodman
Fine Porcelain Pottery
Cell 347-526-9805
www.lynngoodmanporcelain.com
Marcia Selsor on sun 29 apr 07
Hi Gay,
If you want a really clean edge of contrast, you are correct about
the waxing. But use a latex wax from Amaco, Archie bray wax or the
Blue wax from Aftooa.
I am sure there are other brands. They go on top of glaze very well
and won't wreck your interior glaze. Sometimes they (the waxes) take
a few hours to dry.
Marcia
Marcia Selsor
http://marciaselsor.com
Vince Pitelka on sun 29 apr 07
Gay Judson wrote:
> Can anyone tell me how to glaze a bowl or cup with one glaze (color)
> inside,
> another glaze (color) on the outside and no overlap at the meeting at the
> rim?
> Do I wax the inside rim, over the glaze, before glazing the outside?
> Seems
> like that wax might spoil the inside glaze...TIA
Gay -
Painting wax over a glaze is no problem at all. To do what you describe is
really very simple. Glaze the inside in a conventional fashion, rotating
your wrist as you pour the glaze out of the pot so that it coats the entire
rim. Paint wax on the inside of the pot up to the point where you want the
division to be. If you do this on a good ball-bearing banding wheel (NOT a
"lazy-susan" turntable - that's not a banding wheel), with a little practice
you can get an absolutely level, smooth wax edge. Be sure to extend the
wax-coated area several inches down into the vessel, so that there will be
less chance of contamination when you dip the second glaze.
After the wax has hardened, carefully sponge off any of the first glaze that
extends above the wax edge. Let the piece dry, and then dip it as you
normally would. If a small piece and you can grasp the foot, you could dip
the whole thing upside down. The wax on the inside of the pot should help
keep the second glaze from contaminating the first glaze. If a larger
piece, dip it right-side-up into the second glaze up to within a half inch
or so of the rim, and then invert it and dip the rim.
In either case, if you try to hold the vessel perfectly level as you dip the
rim into the glaze, it can suddenly "burp" when a little air escapes from
the inside over the rim, and that will splash glaze up inside the inverted
interior. To prevent that, start dipping with the pot at a slight angle off
level, and that will let a little glaze inside the pot. Restore the pot to
level, and the trapped air inside will prevent any more glaze from entering
the inside of the pot, but there will be no chance of the pot "burping" as
you continue to dip it further into the glaze. That's why you want to make
sure to paint the wax several inches down below the rim - to allow for a
little glaze to be inside the rim when the pot is dipped, without
contaminating the area glazed with the first glaze.
I hope that all makes sense. Good luck -
- Vince
Vince Pitelka
Appalachian Center for Craft, Tennessee Technological University
Smithville TN 37166, 615/597-6801 x111
vpitelka@dtccom.net, wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
Elizabeth Priddy on sun 29 apr 07
The wax won't have much effect,
in my experience with most glazes.
I pour glaze the inside
clean any exterior drips
then suspend the bowl onto my fist
and pour the outside.
You can also add a wire thin line
of wax on the rim's
center before you start and if the clay
body showin a hairline wouldn't be bad.
Elizabeth Priddy
Beaufort, NC - USA
http://www.elizabethpriddy.com
http://www.flickr.com/photos/7973282@N03/
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Gay Judson on sun 29 apr 07
Can anyone tell me how to glaze a bowl or cup with one glaze (color) inside,
another glaze (color) on the outside and no overlap at the meeting at the rim?
Do I wax the inside rim, over the glaze, before glazing the outside? Seems
like that wax might spoil the inside glaze...TIA
Gay Judson
Lois Ruben Aronow on mon 30 apr 07
I wax. It's time consuming, expensive, and it smells bad when you it burns
off (not to mention wear and tear on your elements).
...Lo
Not blessed with the gift of neatness
**********
Lois Aronow Ceramics
Brooklyn, NY
www.loisaronow.com
www.craftsofthedamned.blogspot.com
> -----Original Message-----
> From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of
> Gay Judson
> Sent: Sunday, April 29, 2007 11:26 PM
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: glazing technique help, please
>
> Can anyone tell me how to glaze a bowl or cup with one glaze
> (color) inside, another glaze (color) on the outside and no
> overlap at the meeting at the rim?
> Do I wax the inside rim, over the glaze, before glazing the
> outside? Seems like that wax might spoil the inside
> glaze...TIA Gay Judson
>
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Gay Judson on sat 12 may 07
I asked for help making a separation between the glaze inside a bowl and
outside a bowl at the rim. I got lots of good suggestions.
I tried waxing the inside after applying glaze there, before glazing the
outside and it worked very well for me. I questioned that it would, before
the firing, because the wax was beginning to peel off the inside glaze
before it went into the kiln but it came out great.
Thanks to all who responded to my request. Gay Judson
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