Rachael Rice on mon 19 feb 01
What you see isn't exactly what you get, maybe on green ware but once you put the
clear glaze and fire to even 06, all the colors darken and do change. Is there
away to keep the colors from darkening through the glaze firing. I found the blues
and purples in the amaco velvet series darken the most.
"HAM. Buchanan" wrote:
> The best thing about commercial underglazes is the color. What you see in
> the jar is close to what you get when it is fired. It takes some getting
> used to painting grey over grey and thinking yellow and green.
> I've been using this recipe for so many years I don't remember where it
> came from. I've had good results on greenware, bisque and over my white
> UNDERGLAZE CONE 1 TO 6
> KAOLIN 20%
> BALL CLAY 20%
> BORAX 5%
> WHITING 5%
> NEPHELINE SYNITE 10%
> FELDSPAR 15%
> FLINT 25%
> Buchanan,Heidelberg, Mississippi, USA
> ----- Original Message -----
> From: "Martin Howard"
> Sent: Friday, February 16, 2001 12:30 PM
> Subject: Re: underglazes
> > Why always buy underglazes?
> > Have any on the list prepared their own?
> > If so, what are the limit formulae to aim for?
> > And why cannot I find underglazes for my kiln firing of cone 1-2?
> > The same list of question goes for stains.
> > We can buy the raw materials, and add our own, can't we?
> > So, if we just had formulae for those wonderful colours we should be able
> > cut costs.
> > Or waste a lot of time which might be better spent throwing :-)
> > Martin Howard
> > Webb's Cottage Pottery
> > Woolpits Road, Great Saling
> > BRAINTREE, Essex CM7 5DZ
> > England
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