leaf
The pursuit of a leaf print with sufficient detail to have originated from a
natural leaf.
This print is accidentally a bit closer to what I want, little line
broadening in the veins
This being a different matrix glaze, a previous leaf wash is used. The leaf
was applied
plate is ~ 8 inches in diameter.
150 deg F an hour to 250 deg F
400 deg F an hour to 2050 deg F then a hold of 20 min
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 2210 deg F then a one hour hold at 2210 deg F
80 deg F an hour to 1900 deg F
300 deg F an hour to 1750 deg F then a half hour hold at 1750 deg F
300 deg F an hour to 1700 deg F then a Two hour hold at 1700 deg F
300 deg F an hour to 1600 deg F then a Two hour hold at 1600 deg F
K2O 0.11
Al2O3 0.56
SiO2 3.12
molecular percent Silica 63%
K2O 0.72
Al2O3 1.03
SiO2 7.06
molecular percent Silica 41.9%
A leaf is softened by soaking in water laced with water softener. After
the pot is glazed, the leaf is pressed
The matrix glaze was applied substantially thinner than in previous recent
work. Additionally, the leaf was
A careful inspection shows veins which are nearly white, where the leaf
pressed so far down that the vein
The thickness of the matrix glaze below the leaf wash likely is as important
or possibly moreso than the
This firing profile differs from my more usual firing profiles, and was chosen
to accomodate other glazes tested.
though the resemblance to a leaf requires some
imagination.
both thinner and unevenly as it was
here
. The result was the same delightful
variation in appearance of the
the leaf parts.
Image of the plate with glaze iron_8_R_C10_13PSi and leaf.
oxidation firing to cone 10 in an electric kiln
Firing profiles
Up Fire profile
Down Fire Profile
Clay body is a crystal springs porcelain from Georgies in Portland.
glaze composition
Empirical Formula iron_8_R_C10_13PSi :
Na2O 0.45
Li2O 0.25
CaO 0.17
MgO 0.02
Fe2O3 0.28
Empirical Formulae of leaf wash glaze leaf_Z35_1:
Na2O 0.21
CaO 0.06
MgO 0.01
TiO2 7.75
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 glazes, leaf_Z35_1.
pressed into the glaze earlier in the
process, and more aggressively.
touched the plate, and there is
almost no glaze beneath the leaf wash.
composition of the leaf wash.
The glaze iron_8_R_C10_13PSi was
chosen as matrix glaze, as it was expected to be tolerant of this aberrant
firing.