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looking for grey gloss raku glaze

updated wed 17 aug 11

 

Karen Shapiro on mon 15 aug 11


Hi all,

I could use some advice. I've been using clear base 70/30 gerstley borate/n=
eph.syenite to which I add grey colorant (have tried black mason stain, var=
ious grey mason stains/EZ stroke Duncan colors). It always turns a greenish=
beigy grey. I'm trying for a nice clear bluish grey (should look like tin =
but without any metallic). I use Aardvark's Sonora White clay and raku-fire=
.
Any suggestions will be MOST welcome.
thanks,
Karen

William & Susan Schran User on mon 15 aug 11


On 8/15/11 12:47 PM, "Karen Shapiro" wrote:

> I could use some advice. I've been using clear base 70/30 gerstley
> borate/neph.syenite to which I add grey colorant (have tried black mason
> stain, various grey mason stains/EZ stroke Duncan colors). It always turn=
s a
> greenish beigy grey. I'm trying for a nice clear bluish grey (should look=
like
> tin but without any metallic). I use Aardvark's Sonora White clay and
> raku-fire.

Have you tried applying grey underglaze to greenware, bisque, then apply
clear glaze?

How about grey stain added, in about 10-15%, to white slip made from the
clay body?

One or the other may give your the results you seek better than adding
stain/colorants to the glaze.

Bill

--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com

Pete Horridge on tue 16 aug 11


Hello Karen,

I also use a similar glaze and note that sometimes when I accidentally ha=
=3D
ve a=3D20
reduction firing, when taking up to temp too quickly, I get a greyish bei=
=3D
ge=3D20
overall effect. This isnt the case when I take it steady and have a 'neut=
=3D
ral'=3D20
firing.

Pete