[Terrapreta] Tool Materials

[Greg and April]

Yes, I have seen many blades knapped from obsidian.    They don't make for 
good axes, but they can rival a surgeons scalpel for sharpness when made by 
a pro.

Greg H.


----- Original Message ----- 
From: "Kurt Treutlein" <rukurt at westnet.com.au>
To: "Tera Preta" <terrapreta at bioenergylists.org>
Sent: Saturday, April 19, 2008 23:31
Subject: [Terrapreta] Tool Materials



>
> I was under the impression that obsidian was used for cutting tools.
> Anybody else know?
>
> Kurt
>
>
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