Dean on tue 17 nov 09
Aloha from Kauai, all:
I'd like to raise the firing temp of this glaze from cone 6 to cone 10 and =
=3D
keep the vivid teal color.=3DA0 Any suggestions?=3D20
Teal Blue=3DA0 cone 6
Custar Spar=3DA0 20
frit 3124=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0 20
wollastonite=3DA0 20
silica=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0 20
EPK=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0=3DA0 20
------------
Cobalt Carb=3DA0=3DA0=3DA0 1
Chrome Ox.=3DA0=3DA0 0.5
Thanks,
Dean
=3D0A=3D0A=3D0A
Ron Roy on thu 19 nov 09
Hi Dean,
Try this - I don't see any great problem - you must test first to see if it
stays put - I've kept the alumina/silica ratio and the expansion the same.
Do a 500 gram test and have a cone beside it - let me know if it needs
tweaking - I don't keep recipes so include the original and this one so I
can see what I have done.
RR
28.50 CUSTER SPAR
4.50 F3124
23.00 Wollastonite
23.00 SILICA
21.00 EPK
0.75* CaO
0.04* MgO
0.13* K2O
0.08* Na2O
0.01 Fe2O3
0.00 TiO2
0.04 B2O3
0.54 Al2O3
4.51 SiO2
0.00 P2O5
Si:Al: 8.32
SiB:Al: 8.38
Thermal Expansion: 405.96
Formula Weight: 391.12
On Wed, Nov 18, 2009 at 12:38 AM, Dean wrote:
> Aloha from Kauai, all:
> I'd like to raise the firing temp of this glaze from cone 6 to cone 10 an=
d
> keep the vivid teal color. Any suggestions?
> Teal Blue cone 6
> Custar Spar 20
> frit 3124 20
> wollastonite 20
> silica 20
> EPK 20
> ------------
> Cobalt Carb 1
> Chrome Ox. 0.5
> Thanks,
> Dean
>
>
>
>
>
--
Ron Roy
15084 Little Lake Road
Brighton, Ontario, Canada
K0K 1H0
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