Jennifer Buckner on fri 9 jan 04
I would like to punch smallish (3 to 4 mm diam) decorative holes in the
edges of vases and large plates, but I'm having trouble keeping the glaze
from running into the holes during the firing and plugging them.
I'm using ^6 porcelainous stoneware, glazing with Variegated Blue from
Mastering ^6 Glazes, and firing to ^6 electric. I want the glaze to cover
the inside edge of the holes so I don't want to scrape the glaze completely
off the clay. On my first attempt, I found the glaze ran into the holes
even on a horizontal surface like the edge of a platter.
Would anyone have some suggestions for me?
Jennifer (VT)
Jennifer G. Buckner jenniverre@earthlink.net
Pamela Watkins on sat 10 jan 04
Jennifer,
Have you tried using wax resist? A fine pointed brush with wax resist works for the holes I use in some bowls. But if the nature of our glaze is to run, you may consider a more stable glaze. Just a thought.
Peace,
Pamela
~jaq
Jennifer Buckner wrote:
I would like to punch smallish (3 to 4 mm diam) decorative holes in the
edges of vases and large plates, but I'm having trouble keeping the glaze
from running into the holes during the firing and plugging them.
I'm using ^6 porcelainous stoneware, glazing with Variegated Blue from
Mastering ^6 Glazes, and firing to ^6 electric. I want the glaze to cover
the inside edge of the holes so I don't want to scrape the glaze completely
off the clay. On my first attempt, I found the glaze ran into the holes
even on a horizontal surface like the edge of a platter.
Would anyone have some suggestions for me?
Jennifer (VT)
Jennifer G. Buckner jenniverre@earthlink.net
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logan johnson on sat 10 jan 04
Hi Jennifer.
Use a drill bit the right size to clear the holes when the glaze is dry.Then when the glaze flows during firing it should do what you want it to without filling the holes .At least it works for me. LOL
Jennifer Buckner wrote:
I would like to punch smallish (3 to 4 mm diam) decorative holes in the
edges of vases and large plates, but I'm having trouble keeping the glaze
from running into the holes during the firing and plugging them.
I'm using ^6 porcelainous stoneware, glazing with Variegated Blue from
Mastering ^6 Glazes, and firing to ^6 electric. I want the glaze to cover
the inside edge of the holes so I don't want to scrape the glaze completely
off the clay. On my first attempt, I found the glaze ran into the holes
even on a horizontal surface like the edge of a platter.
Would anyone have some suggestions for me?
Jennifer (VT)
Jennifer G. Buckner jenniverre@earthlink.net
______________________________________________________________________________
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Logan Johnson
Audeo Studios
"Carpe Argillam!!"
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Earl Krueger on sun 11 jan 04
On Friday, Jan 9, 2004, at 17:16 US/Pacific, Jennifer Buckner wrote:
> I would like to punch smallish (3 to 4 mm diam) decorative holes in the
> edges of vases and large plates, but I'm having trouble keeping the
> glaze
> from running into the holes during the firing and plugging them.
Jennifer,
I think what you are seeing is that around a small circular hole the
surface tension of the molten glaze will tend to pull itself together
in an attempt to minimize the surface area. The smallest surface area
will be when the hole is filled and there is only a surface on either
side.
To prevent this you might try reformulating the glaze to have a lower
surface tension but this will probably also make it runnier. I have
little experience in doing this so maybe one of the glaze experts could
step in here.
Earl...
Bothell, WA, USA
Donald G. Goldsobel on sun 11 jan 04
There are two things to consider:
First is to keep the glaze out of the holes when glazing. I put thin bamboo
sticks in the holes-tight fit and remove before firing..
Seconed. The stiffness of the glaze. If you use a runny glaze it will fill
the hole. Use a stiffer glaze or a thinner application uphil from the hole
so it doesn't run downhill into it.
Good luck.
Donald
----- Original Message -----
From: "Jennifer Buckner"
To:
Sent: Friday, January 09, 2004 5:16 PM
Subject: glaze runs in decorative holes
> I would like to punch smallish (3 to 4 mm diam) decorative holes in the
> edges of vases and large plates, but I'm having trouble keeping the glaze
> from running into the holes during the firing and plugging them.
>
> I'm using ^6 porcelainous stoneware, glazing with Variegated Blue from
> Mastering ^6 Glazes, and firing to ^6 electric. I want the glaze to cover
> the inside edge of the holes so I don't want to scrape the glaze
completely
> off the clay. On my first attempt, I found the glaze ran into the holes
> even on a horizontal surface like the edge of a platter.
>
> Would anyone have some suggestions for me?
>
> Jennifer (VT)
>
> Jennifer G. Buckner jenniverre@earthlink.net
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
wayneinkeywest on sun 11 jan 04
Jennifer:
If I read your original post correctly, you WANT the glaze to cover
the inside sides (edges) of the holes, but not to clog the holes solid?
That being the case, you might want to consider firing a test tile with
varying sized holes, say 2, 3, 3.5, 4, 4.5 and 5 mm, coated with your
normal thickness of glaze, and see which
gives you the effect you need. 3-4 mm may be just what you need,
but when you add in the thickness of the glaze you are using on each
side of the diameter, it may shrink it down unacceptably small, and clog.
Also, try firing some test tiles vertically, some horizontally, and perhaps
on an angle and see which works best for your glaze and clay body.
Just a thought.
Wayne Seidl
"wiser minds than mine have said "test, test, test"
>
> > I would like to punch smallish (3 to 4 mm diam) decorative holes in the
> > edges of vases and large plates, but I'm having trouble keeping the
glaze
> > from running into the holes during the firing and plugging them.
> >
> > I'm using ^6 porcelainous stoneware, glazing with Variegated Blue from
> > Mastering ^6 Glazes, and firing to ^6 electric. I want the glaze to
cover
> > the inside edge of the holes so I don't want to scrape the glaze
> completely
> > off the clay. On my first attempt, I found the glaze ran into the holes
> > even on a horizontal surface like the edge of a platter.
> >
> > Would anyone have some suggestions for me?
> >
> > Jennifer (VT)
> >
> > Jennifer G. Buckner jenniverre@earthlink.net
> >
> >
>
____________________________________________________________________________
> __
> > Send postings to clayart@lsv.ceramics.org
> >
> > You may look at the archives for the list or change your subscription
> > settings from http://www.ceramics.org/clayart/
> >
> > Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
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