Sheron Roberts on tue 15 aug 00
NF ENFP
Gemini
person with too many
irons in the fire
Now for a question to=20
anyone who has used
Gare Simplicity commercial
glazes. I purchased a few
jars of this glaze just to use
on three earthenware
sculptural pieces I am=20
preparing for a show. I
do not have time for mixing
and testing batches, nor do
I want to stick with using
earthenware. Anyway
the instructions say to
apply to Cone 04 bisque,
then fire to cone 06. The=20
maturing range for the
earthenware is 06 - 02.
AM I having a brain spasm or
am I right in thinking this
is backwards? Would
there be a reason for=20
bisquing higher than the
glaze firing? All the jars
give the same instructions.
I would appreciate any
enlightenment I can receive
with this.
Thanks a bunch
Sheron in NC
Alex Solla on wed 16 aug 00
Sheron,
yup. There's a reason alright.
If you only fire to the glaze's maturation temp, then
the claybody is really punky (underfired). The glazes
will adhere to a bisque of nearly any temperature, so
in order to reduce crazing, improve fit and
durability, firing your bisque a bit hotter helps to
sinter the claybody (makes a nicer ring too). Glazes
seem happier too.
Good luck and lay on those layers of glaze in unctuous
coats!
-Alex Solla
entj (hiding as an enfp)
--- Sheron Roberts wrote:
> NF ENFP
> Gemini
> person with too many
> irons in the fire
>
> Now for a question to
> anyone who has used
> Gare Simplicity commercial
> glazes. I purchased a few
> jars of this glaze just to use
> on three earthenware
> sculptural pieces I am
> preparing for a show. I
> do not have time for mixing
> and testing batches, nor do
> I want to stick with using
> earthenware. Anyway
> the instructions say to
> apply to Cone 04 bisque,
> then fire to cone 06. The
> maturing range for the
> earthenware is 06 - 02.
> AM I having a brain spasm or
> am I right in thinking this
> is backwards? Would
> there be a reason for
> bisquing higher than the
> glaze firing? All the jars
> give the same instructions.
> I would appreciate any
> enlightenment I can receive
> with this.
>
> Thanks a bunch
> Sheron in NC
>
>
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Mike Gordon on wed 16 aug 00
Hi Sharon,
In my school we use Gare, Duncan and Mayco low fire glazes. On most of
them they specify to bisque at 04 and glaze at 06. The higher bisque is
for burning out the impurities in the clay and hopefully eliminate pin
holes. Mike Gordon
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