[Clayart] b mix 2

ronroy at ca.inter.net ronroy at ca.inter.net
Thu Sep 9 18:36:41 UTC 2021


Hi David,

Wish I had read your post before I wrote mine. Well said - a truly  
professional approach.

RR

Quoting David Hendley <farmpots at eastex.net>:

> If someone sent me a ton of B Mix, (I will forward my shipping  
> address if anyone is interested) I would
> throw a couple of bags, make some shrinkage bars, and see what I  
> think about it. Then I would see how it
> dries, how it bisque fires, and glaze fires. Then I would see how my  
> glazes fit and calculate shrinkage and
> absorption.
> THEN I would alter as needed, to suit me and to make it technically  
> perfect. I do like the look of a
> white body.
> But I doubt I will ever quit using my Blackjack clay. It only makes  
> sense to use locally mined clay
> that has been wet-blunged and never dried. I add things to it when I  
> get the filter cakes stacked on
> a pallet. I am going for a whiter look for the batch I will be  
> making soon. Basically, I made some
> porcelain, 50% EPK, 25% silica, 25% feldspar, that I will be adding  
> to the Blackjack at about 1/4
> porcelain to 3/4 Blackjack. The Blackjack is so plastic no ball clay  
> is needed in the 'porcelain'.
>
> Yes Mel, it's true that I have made my own cones. They are very  
> accurate, tested by firing side-by-side
> with Orton cones. But, I haven't kept it up - one of those  
> educational endeavors just to prove I could
> do it. At 10 cents a cone it's easier to just buy them.
> However, I have saved a ton of money by making my own kiln posts. My  
> kiln post recipe is 50%
> fire clay, 20% ball clay, and 30% crushed insulating firebricks,  
> window screen and smaller mesh (I
> always have broken or crumbling IFBs around).
> Of course they are extruded. Using a shrink rule, they are cut long  
> and shrink to even whole number
> lengths when fired in a glaze firing.
>
> David Hendley
> david at farmpots.com
> www.farmpots.com
>
>
> On 9/7/2021 2:38 PM, mel jacobson wrote:
>> 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.
>>
>>
>
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Ron Roy
ronroy at ca.inter.net
Web page ronroy.net




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