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Kiko Denzer on Art

[Cob] cracks in plaster

Henry Raduazo raduazo at
Tue Sep 16 14:42:28 CDT 2008

I was wondering if anyone has ever tried using paper fibers in lime  
plaster? The shredded paper that I have is mostly bright white paper.  
It does not discolor clays at all and reduces cracking. It should  
reduce cracking on lime plaster too.

On Sep 16, 2008, at 3:41 PM, Bob Smolen wrote:

> Thanks Jill and Ron for your thoughtful comments.
> I reinspected the wall and there are only a couple of very minor  
> cracks in the last lime/sand only layer. I am pleased.
> The earlier coatings were probably too clay rich as you suggest. I  
> will experiment with a less clay mixture.
> I mix the lime and sand and clay at the same time. Is it necessary  
> to soak the lime in water for days before mixing. My last coating  
> seem ok so I believe presoak is not necessary. Can you comment on  
> how you have done your plaster mix?
> Thanks,
> Bob
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