ababy sharon on sun 17 oct 99
hallo Laura!
This ending week I tested some glazes mostly Matt for my favorite clay
K-3020 (from Germany) very dark with black grog. Mainly I wanted to get Matt
glazes. Here are some results as well as some "older
glaze". I like to say again(and again ) that Don Goodrich`s ^6 glazes list
is very good start point for me.
Matt Butterscotch
=================
FRIT 3134........... 21.1 21.13%
DOLOMITE............ 21.0 21.01%
TITANIUM DIOXIDE.... 11.3 11.32%
RUTILE.............. 5.3 5.28%
LITHIUM CARBONATE... 3.9 3.90%
BALL CLAY........... 36.2 36.23%
WHITING............. 1.1 1.13%
========
100.0
CaO 0.49* 13.72%
Li2O 0.13* 1.92%
MgO 0.28* 5.65%
K2O 0.01* 0.40%
Na2O 0.09* 2.81%
TiO2 0.51 20.48%
ZrO2 0.00 0.06%
Al2O3 0.27 13.91%
B2O3 0.17 5.90%
SiO2 1.16 34.65%
Fe2O3 0.01 0.51%
Si:Al 4.23
SiB:Al 4.85
Expan 8.81
Based on a Glaze of Marty Anderson.
Old gold albany
===============
LITHIUM CARBONATE... 10.0 10.00%
Zircopax............ 12.0 12.00%
RED CLAY............ 56.2 56.16%
Whiting............. 7.8 7.80%
Soda Feldspar....... 6.2 6.24%
TALC................ 3.9 3.90%
EPK kaolin.......... 3.9 3.90%
========
100.0
CaO 0.26* 5.16%
Li2O 0.44* 4.54%
MgO 0.16* 2.21%
K2O 0.11* 3.60%
Na2O 0.03* 0.61%
TiO2 0.02 0.67%
ZrO2 0.21 8.99%
Al2O3 0.45 15.83%
P2O5 0.00* 0.01%
SiO2 2.59 53.97%
Fe2O3 0.08 4.42%
Si:Al 5.79
SiB:Al 5.79
Expan 6.27
Notes:
Very nice on white.a little problematic on K 3020 you see the grog too
much!
PERIWINKLE ^6 (12/30)
=======================
Gerst. Borate -..... 49.0 43.48%
EPK -............... 19.0 16.86%
Silica -............ 37.0 32.83%
Soda Ash -.......... 0.2 0.18%
Ultrox -............ 5.0 4.44%
Cobalt carb. -...... 2.5 2.22%
========
112.7
CaO 0.67* 11.24%
MgO 0.16* 1.97%
K2O 0.01* 0.36%
Na2O 0.16* 2.94%
TiO2 0.00 0.01%
ZrO2 0.09 3.47%
Al2O3 0.27 8.19%
B2O3 0.73 15.26%
SiO2 3.11 56.22%
Fe2O3 0.01 0.34%
Cost/kg 10.45
Si:Al 11.65
SiB:Al 14.38
Expan 6.04
Notes:
Denim Blue/purple mix, shows texture underneath, will work at c/5, too.From:
JFTRT Very good and stable on white and brown clay.
WSsandy bronze
============
MANGANESE DIOX. MnO. 60.0 66.67%
COPPER CARBONATE.... 15.0 16.67%
BALL CLAY........... 15.0 16.67%
========
90.0
CaO 0.14* 0.05%
MgO 0.20* 0.05%
K2O 0.39* 0.22%
Na2O 0.27* 0.10%
TiO2 0.77 0.37%
Al2O3 12.66 7.67%
SiO2 35.23 12.58%
Fe2O3 0.20 0.19%
MnO187.02 78.78%
Si:Al 2.78
SiB:Al 2.78
Expan 5.06
Notes:
Very nice and easy!
To Tony Hanson`s 20/5 you can add 1 copper carbonat
1 Chrom oxide
10 Ultrox for a nice
green
That is all for now
Ababi
| |
|
