[Clayart] Red-orange glaze has escaped at cone six oxidation .

[Dragonbelly Ceramics]

I don't know if this would be helpful, but Tim Thornton has a series of
posts on his Instagram about exploring the chemistry of Iron reds.

https://www.instagram.com/tim_thornton_ceramics?igsh=N2dsajZ5b3Q0Y3po

Best,
LJ

On Thu, Oct 24, 2024, 2:58 PM Roxanne Hunnicutt via Clayart <
clayart at lists.clayartforum.com> wrote:

> You’ve heard this from me before.  I love my red that has some connection
> to Stephen hill. Maybe .
>
> Our best glaze, red orange is now ugly brown with no red.   Old buckets
> don’t work any longer. New mixes don’t produce red.
>
> It seems to be about the lack of natural red iron oxide or natural red iron
> oxide.  The synthetic crocus Martis is not effective for me any longer .
> That is sold by u s pigment. They don’t have any that is not synthetic.
>
> Do any of you know of a trove of natural red iron oxide or crocus? Or a
> couple of cups?
>
> So so disappointing to lose this glaze!
>
> Rox. (Any help? I used Texan talc. Would that matter? I used bone ash for
> gardening. Would that matter?)
>
> Red Orange
>
> Cone six oxidation
>
> f-4.   36.7
> Silica.  12.6
> Kaolin.  12.9
> Talc.  13.8
> Bone ash.  12.1
> Frit 3124.  7.5
> Lithium carb.  4.2
> ————————
> Red orange ox. Synthetic 12.5
> Bentonite    2
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