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Porcelain Vs Stoneware Cone 6


jammy43

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I'm looking at various cone 6 clay recipes and have the question of makes a porcelain 'porcelain' vs stoneware.  I had thought it was the addition of a stoneware clay but then i came across the following recipes from val Cushing, both are so similar with the only major difference i see being kaolin  (Tile 6) vs ball clay (C&C).

 

Category White Porcelain Throwing     Source Cushing's Handbook (#2 on p.37)     Name VC Translucent White      Cone 6       Note Translucent white vitreous body               Recipe Grolleg 25       Tile 6 25       Kona F-4 28       Frit 3124 12       Flint 10       Macaloid 2

 

Category White Stoneware Throwing     Source Cushing's Handbook (#2 p.37)     Name VC Vitreous White     Cone 6       Note White, very strong body                                      Recipe Grolleg 25       C&C 25        Kona F-4 30       Frit 3124 4       Flint 16       Macaloid 2  

 

 

ps.  I found this info on Alfred's universtity website, although i see they both reference the same recipe on the same page.  I'm not familiar with Val's book its self to know if this is just a typo

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If you ask 10 different potters this question you'll probably get 11 answers.

 

In my books, if you have ball clay in a body it is not porcelain. 

 

PS, I've used the first recipe you posted, it is very nice albeit very expensive to make. In his book the first you posted is #1 on page 37, the second is #2

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If it's got ball clay, it's not porcelain. Nor is it porcelain-like. Adding ball clay ruins everything that makes porcelain feel so wonderful. So if you want something that's similar to B-Mix or other white stoneware bodies, those recipes will be good, and there's nothing wrong with that. I'd go with the C&C body, because C&C is awesome stuff and it will likely be more workable than the Tile 6 body. But if you want porcelain, then find a recipe that doesn't have ball clay.

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If it's got ball clay, it's not porcelain. Nor is it porcelain-like. Adding ball clay ruins everything that makes porcelain feel so wonderful. So if you want something that's similar to B-Mix or other white stoneware bodies, those recipes will be good, and there's nothing wrong with that. I'd go with the C&C body, because C&C is awesome stuff and it will likely be more workable than the Tile 6 body. But if you want porcelain, then find a recipe that doesn't have ball clay.

Ummm, not seeing any ball clay in the first recipe?

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If it's got ball clay, it's not porcelain. Nor is it porcelain-like. Adding ball clay ruins everything that makes porcelain feel so wonderful. So if you want something that's similar to B-Mix or other white stoneware bodies, those recipes will be good, and there's nothing wrong with that. I'd go with the C&C body, because C&C is awesome stuff and it will likely be more workable than the Tile 6 body. But if you want porcelain, then find a recipe that doesn't have ball clay.

Ummm, not seeing any ball clay in the first recipe?

 

 

Brain fart! I was thinking XX sagger while reading Tile 6. Time for bed!

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