Cob: Cob in colors

[D.J. Henman]

Patti,
I would suggest that you study the effect of adding an acidic organic 
material such as berry juice to lime, which is an alkali.    Most stable 
materials I know of to create colors in a lime plaster are mineral types 
and pine soot for black, cobalt for blue, etc.    Makers of pottery 
would probably be a good source to find out about minerals used for 
coloring.

> ...........
>
> I have a question- my sister (16) is really into cob and since im 13 
> and my parents like the idea we are gonna build our house out of it 
> (we just moved to WA).  Im getting into it too now and im a very 
> artistic person and i was wondering if there was other ways to get 
> natural colored paint than by using lime (which is the only way my 
> sister knows).  I was wondering if mixing blackberry or huckelberry or 
> other berry juices with the plaster would make pastel colors.
> thanks,
> Patti
>
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