[Clayart] b mix 2

ronroy at ca.inter.net ronroy at ca.inter.net
Thu Sep 9 18:26:04 UTC 2021

Well - I have nothing against fixing clay, but when you start adding  
materials, not only affects maturing temperature but how glazes are  
going to react. Testing the resulting body to see how shrinkage,  
absorbency and color response are affected is wise.

For instance - adding silica can affect not only the beta to alpha  
quartz inversion but also the overall expansion/contraction of a clay  
or a glaze.

Keep in mind - lowering expansion can result in glazes with a low  
starting low expansion can result in broken pots and shivering.  
Possibly the worst thing that can happen to a potters sales.

I'm not in any way saying that commercial clay bodies cannot be  
improved on. Many are deficient in more than one way. But - if you  
don't have basic important
information obtained from your clay supplier or by testing, you can  
make the situation worse.

Anyone who needs testing information - just send me an email.


Quoting mel jacobson <melpots at mail.com>:

> If someone sent me 2000 pounds of Bmix I would
> run it all through my pug mill, add fine grog and
> a pure silica sand and probably some black iron
> sand. opps, it is no longer Bmix. I can fire anyway
> I wish. I now control the clay, it does not control me.
> If you buy any ready made product, you are tied to it.
> it controls you. it must be fired a certain way, it has
> limits.  I do not want my pottery, work and art starting
> with limits.
> Laquna makes millions of tons of Bmix.  It is all the same,
> and carefully controlled.  It means that thousands of potters
> are using the same clay.  MN clay No1 stoneware is used be
> many potters. It all fires the same.  Only daring potters alter
> the mix. It is exciting. try it sometime.
> My clay body is mine, the glaze is mine, I built the kiln. That too
> is controlled by me. I like that thought.  I like my new speckled
> shino with black soda ash painting.  When my stamp goes on those
> pots it means "Melpots"...not sorta mels.
> The story about the Northern Clay Center buying a  "BLoW" so that
> new young genius' can fire as they don't know how...has me meditating
> in technicolor.
> I smile when I think of David Woof altering everything he does...smart as a
> whip and he can also be snotty.  Good for David. smart fellow and  
> does it all.
> David Hendley making his own cones. He is a brilliant well educated  
> potter, artist
> and singer.
> I remember when joe koons came to me with the "Haresfur" project and  
> the first
> day I said..."Joe, think kiln shelves and what happens inside a sagger?"
> It was the "Key to the city".
> How many people are using rotten, bad to work with cone 6 clay?   
> thousands. They
> are tied to it.  I just added 30percent earthenware, got rid of the  
> nasty talc.
> wow, that was really hard...went back in my notes and found that 5x20 glaze.
> fired to cone 6 in under five hours.
> I am now making stoneware clay with black and red iron that fires a  
> deep black/purple.
> How hard to do is that????
> I am altering my cone 11 clay with 5 percent redart, and black iron.  
> it even throws better.
> All I am talking about is "Taking Charge of your Life".  The joy of  
> being a clay directed person
> is the challenge, the making new, trying and making a success. Be you.
> If you have to have ready made clay and `blow` kiln at $60,000, go  
> back to bed.
> . I think of Robin Hopper as a "symphony of clay, not a one note song".
> 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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