search  current discussion  categories  glazes - cone 4-7 

cone 6 ox blood glaze

updated mon 17 aug 98

 

Veena Raghavan on sat 15 aug 98

This is addressed to Eric Hagan. One of the messages posted earlier
mentioned that you had sent someone a Cone 6 Ox blood glaze. I wonder if
you would mind sharing this with the members of Clayart. It would be great
if you would. Hope it is not presumptious of me to ask. Thanks in advance
if it is OK.
Veena Raghavan
75124.2520@compuserve.com

Erikyu on sun 16 aug 98

At 06:21 AM 8/15/98 , you wrote:
>----------------------------Original message----------------------------
>This is addressed to Eric Hagan. One of the messages posted earlier
>mentioned that you had sent someone a Cone 6 Ox blood glaze. I wonder if
>you would mind sharing this with the members of Clayart. It would be great
>if you would. Hope it is not presumptious of me to ask. Thanks in advance
>if it is OK.
>Veena Raghavan
>75124.2520@compuserve.com


Not at all presumptious, I got it from a ClayArt post myself.

From Ron Roy...
----------------------------Original message----------------------------
Well I guess some of you are thinking I am going to warn about the low
expansion of this one - not so - all that Red Iron raises the expansion to
a safe level - in fact - because the B2O3 is nearly 15% (above the amount
effective for lowering expansion) I suspect this glaze will craze on some
bodies.

Beware - there is hardly any Alumina (Al2O3) in this glaze - Alumina is the
stuff that keeps glazes from sliding off pots. Because if the very low
(almost non-existent) Al2O3, the low SiO2 and the oversupply of B2O3 - this
is certainly not a durable glaze and will very likely scratch easily.

I am having a hard time thinking of this as a glaze - let me just say a
wildly unbalanced glaze at cone 6 for sure. If I add 14.5 parts of EPK it
is barely durable according to both sets of limits I use for cone 04
glazes.

On top of all that - all that red iron looks like an oversupply to me and I
suspect it is lying around on the surface waiting for something to affect
it. This would be an interesting "glaze" to do an acid and alkali tests on.


>----------------------------Original message----------------------------
>This one I got from Clayart. Just fired it and I love it. Seems to
>come out best on white claybody.
>
>APPLY HEAVILY FOR BEST RESULTS
>GERSTLEY BORATE 54.88
>TALC 14.63
>FLINT 30.49
>
>ADD RED IRON OXIDE 21.95%


Erikyu, aka Eric Haggin
Dublin, CA, USA

erikyu@home.com

Yakimono Ya
Nendo ni Shimiiru
Kama no koe