Glaze Variation of the Original Robyn's Eigg Recipe
B-Mix Stoneware
Cone 10
Oxidation and Reduction

cone 10
porcelain

These glaze tests are variations on my 4321 and Robyn’s Eigg glazes. The fluxes in these base recipes have been replaced with wild fluxes I have refined from rocks and minerals found in Arkansas. 

Cone 10, clear gloss glaze
4321 is the base glaze for all of the tests in this collection. Each change in color is due to the addition of a wild pigment.  

4321
Nepheline Syenite - 40
Whiting - 20
EPK - 10
Flint - 30
Wild Pigment - 5, 10, 15, 20
Water - 60

Robyn's Eigg is a cone 10 glaze that sits on the matte/gloss line of stull's map and contains titanium dioxide and rutile, which promote phase separation. I used this recipe as the base for all of the glazes in this collection, the only variable being the colorant. I mixed up a batch of Robyn's Eigg without the black copper oxide and substituted 5% and 10% wild pigments. All test tiles are made on a b-mix clay body.

ROBYN'S EIGG
Minspar: 51.5
Whiting: 27.5
EPK: 15.5
Silica: 5.5
Titanium Dioxide: 4
Wild Pigments: 5, 10, 15, 20