Czola on fri 8 sep 00
I do a lot of work with slips and studio-made liner. The clear glaze we =
use causes these elements to run like crazy, so i'm trying to develop a =
good, stable clear for cone 9 oxidation... preferably one that does not =
use Gerstley Borate.
This recipe turned out to be a beautiful, satin... semi-translucent =
white, though it's listed as a clear. Any thoughts why that happened to =
Potash Feldspar (I used Custer Feld) 44%
David Hewitt on sat 9 sep 00
You may like to try the following:-
Potash Feldspar 400
China Clay 135
In message , Czola writes
>I do a lot of work with slips and studio-made liner. The clear glaze we =
>use causes these elements to run like crazy, so i'm trying to develop a =
>good, stable clear for cone 9 oxidation... preferably one that does not =
>use Gerstley Borate.
>This recipe turned out to be a beautiful, satin... semi-translucent =
>white, though it's listed as a clear. Any thoughts why that happened to =
>Potash Feldspar (I used Custer Feld) 44%
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk
Czola on tue 12 sep 00
I'm going to have to play with the recipe to make it work under the =
conditions i'm stuck with ie kilns loaded with student work. I'm sure =
many of the glazes we use could benefit from a long soak at cone 9, but =
hey, it's not up to me. Most of the glazes are based on Gerstley =
Borate... pick another can of worms.
I've had so much help! Thank you all. I'll definitely post the recipe =
when it's perfected, with credit to all who untangled it.=20
I have also run some tests using different lengths of dip -- 1, 2, and =
three second dips, just to be sure the semi-opacity is not due to =
overglazing. Is a glaze just as happy with thick/short application as =
it is thin/longer application? there are SO MANY variables! David =
Finkelnberg has been a sweetheart with long lessons in glazes and line =
blends, and i'm reading Rhodes now.
THANK YOU THANK YOU THANK YOU!