David & Diane Chen on sat 24 jul 99
Frustration is setting in. I am rolling out porcelain to a fairly thin
thickness (around 1/8 inch) and lightly drawing into the porcelain christmas
related items. I then roll lightly over them again to make sure they are =
flat.
I dry them between newspaper then homasote (like drywall) which works fine =
for
my tiles. This is the third morning in a row where they seem to be drying
slight curved inwards. Naturally I want these to lie flat. Anyone have any
clues? They certainly start out that way. Help, I really need to get this
underway.
Thanks
Diane
sunny (will it ever rain) massachusetts
Lori Pierce on sun 25 jul 99
Hi Diane...the ornaments may be 'cupping' because the design cut into one
surface creats unequal drying stresses. I might try drying a few tests
between damp plaster (or drywall, which has a plaster core). The face of the
ornament undoubtedly drys a bit more than the back as you work on the front;
the moisture content might have to be equalized, before final
drying...(think porcelain mug handles). Lori in New Port Richey Fl.
-----Original Message-----
From: David & Diane Chen
To: CLAYART@LSV.UKY.EDU
Date: Saturday, July 24, 1999 4:29 PM
Subject: Porcelain ornament dilemma
>----------------------------Original message----------------------------
>Frustration is setting in. I am rolling out porcelain to a fairly thin
>thickness (around 1/8 inch) and lightly drawing into the porcelain
christmas
>related items. I then roll lightly over them again to make sure they are
flat.
>I dry them between newspaper then homasote (like drywall) which works fine
for
>my tiles. This is the third morning in a row where they seem to be drying
>slight curved inwards. Naturally I want these to lie flat. Anyone have
any
>clues? They certainly start out that way. Help, I really need to get this
>underway.
>
>Thanks
>Diane
>sunny (will it ever rain) massachusetts
>
Thonas C. Curran on tue 27 jul 99
David & Diane Chen wrote:
>
> ----------------------------Original message----------------------------
> Frustration is setting in. I am rolling out porcelain to a fairly thin
> thickness (around 1/8 inch) and lightly drawing into the porcelain christmas
> related items. I then roll lightly over them again to make sure they are flat.
> I dry them between newspaper then homasote (like drywall) which works fine for
> my tiles. This is the third morning in a row where they seem to be drying
> slight curved inwards. Naturally I want these to lie flat. Anyone have any
> clues? They certainly start out that way. Help, I really need to get this
> underway.
>
> Thanks
> Diane
> sunnyddddddddddddddddddddd (will it ever rain) massachusetts
I use a pair of plaster bats for drying flat ornaments and other such
items, sandwiching the ornaments between the bats. The ornaments dry
more quickly and without warping that way. (Over the years I've built
up a decent inventory of bats for that purpose. When I use plaster for
a project, any excess goes into a flat cookie sheet. Even if the top
surface of the "bat" thus formed may be rough, the bottom will be nice
and smooth. I also use regular plaster bats at times.) Since I do not
have a huge productdion of ornaments, this method works for me. Carolyn
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