[Cob] kaolin vs cat litter

[dirtcheapbuilder-Charmaine Taylor]

   The big
> advantages of cat litter are that it is ground up so it mixes readily, 
> and
> you can buy small quantities (10 to 50 lbs) at your local grocery 
> store.
>


  Fine kaolin clay  can be bought in 50# sack for $3-4.   no griding, it 
is a  clean  powder and ready to go.

this fine silica clay can be added to sandy soils to fatten up the clay 
content  for various mixes.
>
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