[Clayart] Hal's Satin Matt

[ronroy at ca.inter.net]

Hi Snail,

I'm assuming this is a cone 6 glaze!

It's way over in alumina so it will be under fired. It's not high in  
calcium at all so it's not matte because of that. I added 11  
wollastonite  and also 11 more whiting and 11 barium but all result in  
shiny glazes. I can't think of what else to add.

I also looked through Val Cushings book and a few hundred clayart  
recipes and could find no reference to Hal's satin matte.

I did find a clay matte (from Plainsman clays)also high in CaO
wollastonite - 33.88
Frit 3134 - 21.1
Kaolin - 45.01
Total - 99,99

There are a couple of cone 6 calcium semi mattes in our book as well -  
lots of blue variations.

RR


Quoting Snail Scott <claywork at flying-snail.com>:

> Hey, all!
>
> I  am going through my old glaze files (literally 3x5 file cards) of  
> recipes I never made use of before, seeking to make a blue calcium  
> matt. I pulled up several possibilities, including Hal's Satin Matt.  
> I did notice that my version doesn't add to 100, and I'm not sure if  
> I mis-transcribed it or not.
>
> 30 silica
> 11 boron frit (I'm using 3195)
> 4 EPK
> 38 neph. sy.
> 6 whiting
>
> Any thoughts?  My glaze mixing area is in the un-airconditioned,  
> uninsulated part of the studio, and the thermometer reads 104F with  
> 92% humidity, so I may not be thinking clearly. And I'm typing on my  
> phone,  so not sure how this will format...
>
> -Snail
>
> P.S.  When I type 'matt' (the spelling in the original recipe), it  
> autocorrects to Matt, and then suggests 'Damon' as the next word.   
> ;)    I wish...
>
> Sent from TypeApp
>
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Ron Roy
ronroy at ca.inter.net
Web page ronroy.net