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lower temp glaze melt

updated wed 20 feb 02

 

Tracy Wilson on sat 16 feb 02


I have a great glaze that I like because it causes my clay body to look =
gray underneath. It matures at ^10 to ^11. The problem is the rest of =
the glazes I regularly use mature at ^9 so pots are always over/ under =
matured. Could someone plug this in to a program (or use their head) to =
reformulate this glaze to mature around ^9 maybe even a bit cooler?=20
=20
^10-11 glossy clear

Flint 36
G-200 (potash spar) 23
EPK 18
Whiting 14
Talc 9
_________
100

Thanks in advance...=20
Tracy Wilson=20
__________________________

Email: saltbox@prexar.com
Web: www.saltboxpottery.com
_____________________________

David Hewitt on mon 18 feb 02


Tracy,
Try reducing the Flint in steps. Maybe down as low as 15 parts.
David
In message , Tracy Wilson writes
>I have a great glaze that I like because it causes my clay body to look =3D
>gray underneath. It matures at ^10 to ^11. The problem is the rest of =3D
>the glazes I regularly use mature at ^9 so pots are always over/ under =3D
>matured. Could someone plug this in to a program (or use their head) to =
>=3D
>reformulate this glaze to mature around ^9 maybe even a bit cooler?=3D20
>=3D20
>^10-11 glossy clear
>
>Flint 36
>G-200 (potash spar) 23
>EPK 18
>Whiting 14
>Talc 9
> _________
> 100
>
>Thanks in advance...=3D20
>Tracy Wilson=3D20
>__________________________
>
>Email: saltbox@prexar.com
>Web: www.saltboxpottery.com
>_____________________________

--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk

Ron Roy on tue 19 feb 02


Hi Tracy,

The expansion on the original is kinda low - be careful - some clays are
going to object.

Try this revision for cone 9 - it may need more melting - if so gradually
increase the frit.

G200 - 30.0
Whiting - 14.0
Talc - 9.0
Frit 3134 - 2.0
Epk - 14.0
Silica 31.0
Total - 100.0

RR



>I have a great glaze that I like because it causes my clay body to look
>gray underneath. It matures at ^10 to ^11. The problem is the rest of
>the glazes I regularly use mature at ^9 so pots are always over/ under
>matured. Could someone plug this in to a program (or use their head) to
>reformulate this glaze to mature around ^9 maybe even a bit cooler?
>
>^10-11 glossy clear
>
>Flint 36
>G-200 (potash spar) 23
>EPK 18
>Whiting 14
>Talc 9
> _________
> 100
>
>Thanks in advance...
>Tracy Wilson



Ron Roy
RR# 4
15084 Little Lake Rd..
Brighton,
Ontario, Canada
KOK 1H0
Residence 613-475-9544
Studio 613-475-3715
Fax 613-475-3513