ghost glaze with print
firing to cone 10 in oxidation
slow downfire at 50 deg F an hour in the interval 1850 deg F to 1700 deg F
slow downfire at 25 deg F an hour in the interval 1700 deg F to 1650 deg F
One hour hold at 1650 deg F
Ghost Glaze cooper_404_3_Z11NoIron
The ghost leaf on a white ground
Recall the manipulated image of this ghost leaf. It's primary vein is slanted up slightly from the left and about one quarter of the way down the image, marked by the black hair.
The leaf has been stained with a thick application of thin alberta clay slip.
The glaze is a smooth sparkly paper white, which while stiff at cone 10, is smooth to the fingers.
For c/10 this glaze is relatively low in alumina, with alkali metals nearly equal to alumina.
The fine sharp veins result from a substrate which is nearly stationary.
The same glaze with a strongly visible print
Here we see this same glaze, with a stain comprised of EPK Kaolin with some Red Iron Oxide. The print is dark and easily visible. The texture of the mask is visible.
The slightly yellowed marks, show where the wash is strongly absorbed by the glaze.
The form and shape of the initial mask are recognizable in the abstracted form of the print.