[Clayart] Iron red secret

Hank Murrow hmurrow at efn.org
Tue Feb 21 14:22:46 EST 2017

Dear Group;

Mention might be made here in relation to Shino recipes, which use either a very small anmount of iron oxide, or the iron in the clay body itself, or iron slips, to produce the characteristic red iron color. In these cases, the color is on the surface of the glaze, rather than throughout the glaze. My Shino recipe has .206 molecular equivalents of P2O5 from Low Melt Spodumene, thus producing the red “aka” Shino.

Cheers, Hank in Eugene

> On Feb 21, 2017, at 9:02 AM, Robert Harris <robertgharris at gmail.com> wrote:
> I concur with John. Most recipes use about 10% bone ash. As Mel said you
> could do a line blend, but I would start at 8% and go up to 13%. A few
> percent here and there isn't going to do much of anything.
> On Sun, Feb 19, 2017 at 6:49 AM, Keith Gordon <cageycreate at optonline.net>
> wrote:
>> How much bone ash is needed?

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