Cob: cob mix

[Amanda Peck]

Unfired clay IS brittle. It works as cob when it is nice and thick.

Silt is pretty nasty (It makes a non-draining puddle just the way clay does, 
and I've floated my truck in it. eeeuw.  not to mention tow truck time).

Do you know a potter?  Someone who throws pots or does slab building pieces 
(as opposed to slip-molded ceramics)?  Go and ask to play with a chunk of 
clay--rolling it into coils, coiling them to make a pot.

Do you have enough SAND in your mix? (the guys doing "ceramics" from slip 
have almost none--potters have lots of sand or ground fired clay, I gather 
that cob builders have even more)

Natalie wrote:
I did do some bricks with srtaw and they were better but still brittle. I 
got the clay from the local brickworks, they had 2 types the white one, 
which they said was the best and an orange coloured one. Maybe I must go 
back and ask them for the orange clay. I am going to try the different 
methods you have suggested. I did make a thicker brick and that was much 
stronger. I will let you know.

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