leaf with sharp veins
The glaze longquan-iron-shino-Z3N-0 seen
here has a dense covering of micro-crystals which form
The same glaze and leaf wash seen
here with both a thinner glaze and and leaf wash, had prominent
On the plate shown here, micro-crystals are prominent on the leaf, which has sharply
defined leaf veins.
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 0.13
Al2O3 0.88
SiO2 3.49
molecular percent Silica 62.2%
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
on the
surface of the glaze, yet the leaf veins were broadened and indistinct.
veins yet a near transparent leaf body.
These are the result of an intentional uneven
application of the leaf wash. The leaf wash was dabbled on
in a purposefully
impulsive manner. The base glaze was applied thickly.
Image of the plate with glaze longquan-iron-shino-Z3N-0 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 longquan-iron-shino-Z3N-0 :
Na2O 0.47
CaO 0.28
MgO 0.12
Fe2O3 0.16
P2O5 0.08
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.