multicolored leaf
The glaze satIron_ZG_Z3N_Z3U is seen
here with a thin application.
In this note, that same glaze with a thicker application, shows coppery
colored metallic micro-crystals.
plate is ~ 7 inches in diameter.
150 deg F an hour to 250 deg F
400 deg F an hour to 1800 deg F
300 deg F an hour to 2050 deg F
120 deg F an hour to 2310 deg F with a hold of 20 minutes at 2310 deg F
300 deg F an hour to 1850 deg F then a 2 hour hold at 1850 deg F
300 deg F an hour to 1750 deg F then a 1 hour hold at 1750 deg F
300 deg F an hour to 1700 deg F then a 3 hour hold at 1700 deg F
25 deg F an hour to 1650 deg F then a one hour hold at 1650 deg F
K2O 0.17
Al2O3 0.73
SiO2 3.45
molecular percent Silica 62.9%
K2O 0.43
Al2O3 0.54
SiO2 3.33
molecular percent Silica 48%
A leaf is softened by soaking in water laced with trisodium phosphate. After
the pot is glazed, the leaf is pressed
Additionally, a thicker base glaze
application allows diverse mixtures of glaze and leaf wash
resulting in a
range of colors in the leaf print.
Image of the plate with glaze satIron_ZG_Z3N_Z3U and leaf wash
leaf_Z3K.
oxidation firing to cone 10 in an electric kiln
Firing profiles
Up Fire profile
Down Fire Profile
Clay body is a grolleg porcelain from Clay Art Center in Tacoma, WA.
glaze compositions
Empirical Formula satIron_ZG_Z3N_Z3U:
Na2O 0.44
CaO 0.28
MgO 0.11
Fe2O3 0.23
P2O5 0.07
Empirical Formulae of leaf wash glaze leaf_Z3K:
Na2O 0.53
CaO 0.04
P2O5 0.15
into the glaze. When the glaze
dries, a swatch of plate including the leaf is coated with wax. When the wax
is dry, the leaf is removed and the indentations in the glaze are coated
with a very thin layer of an
underfired glaze.