A Rutile Blue Glaze with Snow Flakes
This is a rutile blue glaze with rutile crystals that resemble snow flakes.
The design is created by adhering a mask and then applying the main
glaze. After drying, the mask is removed
150 deg F an hour to 250 deg F
400 deg F an hour to 1800 deg F
200 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 1750 deg F then a half hour hold at 1750 deg F
300 deg F an hour to 1700 deg F then a three 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 0.19
Al2O3 0.60
SiO2 3.4
molecular percent Silica 65%
K2O 0.08
Al2O3 0.61
SiO2 4.0
molecular percent Silica 66.7%
The pits are a defect, and yet for a decorative piece, as this is, the large
rutile crystals are very nice.
and the open area filled in with a
second glaze, using a bulb syringe with a needle applicator.
Image of the glaze hiAl_4Z_3PSi_PAlk
vase is ~ 5 inches high
oxidation firing to cone 10 in an electric kiln
Firing profiles
Up Fire profile
Down Fire Profile
Clay body is cone 10 BMix
glaze composition
Empirical Formula hiAl_4Z_3PSi_PAlk :
Na2O 0.41
Li2O 0.25
CaO 0.03
MgO 0.02
SrO 0.10
TiO2 0.23
Inlay Glaze Composition
Empirical Formula satIron_mashiko_neph_Imerys :
Na2O 0.11
Li2O 0.28
CaO 0.51
MgO 0.02
Fe2O3 0.25
P2O5 0.15
Remarks