Michelle Rhodes on thu 25 feb 10
Longer firing: I don't have a digital system and fire electric =3D20
bisque usually ^08 for ^10 gas using only a kiln sitter. As I often =3D2=
0=3D
fire thick student sculptures, I fire very slowly in the beginning, =3D20
but what kind of slower schedule are you suggesting after red heat? =3D20
And I'd like to get back to my original question which had to do with =3D20=
=3D
some glazes, in particular my chun, having some too large bubbles , =3D20
not pinholes, in the fired glaze. What to do about that? Someone had =3D2=
0=3D
suggested "too viscous glaze" another suggestion was "flouride gas in =3D20=
=3D
the cornwallstone. and substitute DF .. Can't find a supplier for DF =3D20
cornwall stone (deflourinated) although I am considering brushing my =3D20=
=3D
teeth with the non DF stuff....\
PS I don't have bloating problems in my gas firing,( though I do =3D20
sometimes in the wood kiln with unbisqued pieces, so perhaps my glaze =3D20=
=3D
bubble problem has nothing to do with my bisque, though it has been an =3D2=
0=3D
interesting thread.
On Feb 25, 2010, at 4:29 PM, Lee Love wrote:
> On Thu, Feb 25, 2010 at 10:29 AM, David McBeth =3D2=
0=3D
> wrote:
>
>> After 10 plus years of firing that way, last semester we started =3D20
>> having
>> serious bloating problems in the Cone 10 glaze firing with our =3D20
>> stoneware. I
>> have slowed down the bisque and now bisque the stoneware to 07-08 =3D20
>> over a
>> longer firing. I am still happy to bisque the porcelain to around =3D20=
=3D
>> 010
>
> You have to listen to you clay. I have found that a high iron clay
> with an iron saturated glaze is more prone to bloating. Unglazed
> porcelain/light natural clay is the lest likely to bloat.
> --
> Lee, a Mashiko potter in Minneapolis
> http://mashikopots.blogspot.com/
>
> =3D93Observe the wonders as they occur around you. Don't claim them. =3D
Feel
> the artistry moving through and be silent.=3D94 --Rumi
Michelle Rhodes LMSW ATR-BC
Deep Clay Art and Therapy
phone 845-255-8039
cell 845-417-1369
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