Lee Sipe on sun 13 sep 98
Since my deep cobalt blue glaze cone 6 oxidation is giving me a lot of trouble
(blisters/pinholes), I would really appreciate any troublefree deep cobalt
blue glaze recipes. I use speckled brown clay.
lpskeen on mon 14 sep 98
Lee Sipe wrote:
> ----------------------------Original message----------------------------
> Since my deep cobalt blue glaze cone 6 oxidation is giving me a lot of trouble
> (blisters/pinholes), I would really appreciate any troublefree deep cobalt
> blue glaze recipes. I use speckled brown clay.
Try Tony Hansen's 20x5 base glaze and add 1% cobalt, 4% Rutile and 2%
Rutile. It's a dark navy blue with some mottling. Needs an opacifier
behind it though, but I haven't had time to test those yet.
To get Tony's glaze, go to http://www.digitalfire.com
Lisa Skeen ICQ# 15554910
Living Tree Pottery & Soaps
"We will have to repent in this generation not merely for the hateful
words and actions of the bad people, but for the appalling silence of
the good people." -- Dr. M. L. King, Jr. 4/16/63
Beth Yeatman Spindler on mon 14 sep 98
just a comment...........
not sure what it was....but saw the prettiest blue...truest blue ever.....on
mugs at the Sugarloaf Crafts Fair in Mananass yesterday....Wardell
Pottery.....was told that it was Tony Hansen's
recipe......goregous,,,,absolutely goregous and I am not a blue
person.....but this one grabs you and commands/demands your attention... :)
Beth in beautiful BLUE Ridge Mtns foothills of VA......................
p. s. not a bad show......allergic to hay, etc....so a fairground setting
would be out for me as an exhibitor.... still a little stuffy this a.m.......
:) of course, should they invite me to participate....I think I would look
into a battery-operated air purifier or a stylish mask of some sort....LOL !!
Cindy on tue 15 sep 98
I like this one. It also makes a lovely light blue if you cut the rutile
and the cobalt in half. (I use brown clay with manganese, like you do. I'm
told this glaze has a nice purply tint over white clay.)
^6 Saffire Blue
Cobalt Ox. 2.13
Don Goodrich on tue 15 sep 98
Here's a cobalt violet that with a little tinkering (less manganese) would
be a deep blue. I've been using it on buff stoneware for several months with
no trouble. Obviously, your clay body might yield different results with it.
By the way, might the specks in your clay be responsible for some of the
Deep Violet/Blue ^6 oxidation
38.5 Minspar 4 (soda spar)
29.7 Gerstley Borate
2.9 Cobalt Carbonate
5.0 Manganese Dioxide
Breaks dark blue where thin
>Since my deep cobalt blue glaze cone 6 oxidation is giving me a lot of
>(blisters/pinholes), I would really appreciate any troublefree deep cobalt
>blue glaze recipes. I use speckled brown clay.