[Clayart] white clay leaks.

ronroy at ca.inter.net ronroy at ca.inter.net
Mon Jul 12 17:04:34 UTC 2021

What Mel is saying here may lead some potters to think it is  
impossible to make a cone 6 white clay body that does not leak.

I can do that, been doing it for 40 years. It's not impossible but you  
need to know what you are doing and keep an eye on any changes in the  
raw material.


Quoting mel jacobson <melpots at mail.com>:

> there is a very old saying.. porcelain is a white body, but, not all  
> white clay bodies are porcelain.
> one day we will go to a big show and the potter will be showing cone  
> 013 raku "ta dah" Porcelain...To even suggest
> the word "Porcelain" would mean to me that the work is cone 10-12.   
> It is totally vitrified, and will hold
> acid.   So much of what the vendors sell is "fluxed up" white clay  
> bodies and lets face it, no one really
> cares if it is "almost vitrified"  I know, semantics
> That is why the clay I started using is brown, and totally  
> vitrified. you control the color, the redart
> is the flux and makes it more workable.  I swear that in 2095  
> potters will be complaining their
> cone 6 "porcelain leaks". hell, it is not even very close to "white  
> stoneware".
> I sat a tall tumbler out of mel 6 clay on Mike Meyers (MN Clay  
> owner) desk and filled it with water.
> I said "keep it full for a month." he did.  not a drop of water on his desk.
>  I boiled  bars of  clay for  3 hours
> weighed them with a digital  scale.
>   perfect.
>   MEL
> website: www.melpots.com
> www.melpots.com/CLAYART.HTML

Ron Roy
ronroy at ca.inter.net
Web page ronroy.net

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