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A Glaze That Uses Goldart


TJR

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I have a 5 gallon bucket of Goldart sitting in my studio. I used to use it for white slip;

Ball clay 33%

EPK.      33%

Goldart  33%

 

Called Schiller White Slip.

Not using slips any more as my glazes are very opaque.

I got a glaze recipe; [Cone 10 reduction]

Ash 50%

Goldart 50%

 

But it is very dry. A nice yellow ochre colour though.

Any thoughts?

TJR.

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Here in lies the problem. I substituted Goldart for EPK  in an ash glaze that I have. It came out a boring whitey/cleary.

I think it was;

Custer 40

Goldart 30

Ash 30.

 

Of course I am testing before I put it on any pots. I know that Goldart is a white stoneware clay.

TJR.

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finally found these old recipes. They are from the Stature Bros. in Vermont I believe.

Good Clear ^8-9

2 F-4 Feldspar

1 Whitlng 

1 Silica

2 Cedar Hts. Goldart

Matt white ^8-9

1 scoop Cedar Hts Gold Art 

1 scoop Dolomite

2 scoops F-4 feldspar

 

green 15 chrome Ox +0.5 Cobalt Ox+ 3 Rutile

Blue/purple  1 cobalt Ox

Gold tan 3-4 % rutile

 

I am glad the paper didn't crumble from age.

 

Marcia

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TJR-I have a bag of goldart with your name in it as I never used it-stop by on your next trip to see the redwoods?

I think scoop glazes are just for us old timers.Scoop size does not matter as long as they are all the same scoop used.

Mark

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Is the ash in the recipe washed?  I ask because I've seen half and half clay and ash recipes that melted well, but if the ash is washed, a lot of flux goes with the wash water.

Yes, the ash is washed. Maybe you hit the nail on the head.

TJR.

Thanks.

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finally found these old recipes. They are from the Stature Bros. in Vermont I believe.

Good Clear ^8-9

2 F-4 Feldspar

1 Whitlng 

1 Silica

2 Cedar Hts. Goldart

Matt white ^8-9

1 scoop Cedar Hts Gold Art 

1 scoop Dolomite

2 scoops F-4 feldspar

 

green 15 chrome Ox +0.5 Cobalt Ox+ 3 Rutile

Blue/purple  1 cobalt Ox

Gold tan 3-4 % rutile

 

I am glad the paper didn't crumble from age.

 

Marcia

Thanks, Marcia;

Here's the problem. You have to convert scoops to grams as I am assuming that the colourants are a percentage of 100 grams and not a scoop. Right?

Tom.

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