[Cob] plaster strength...

[Amanda Peck]

Charmaine Taylor www.dirtcheapbuilder.com is always a place to start for 
anything to do with lime and plaster--especially if you go over to her 
papercrete pages.

But there are other people considering the problem--the guy at daycreek, for 
instance (I only rarely read this, so you may have to search the site to 
find what he used for window sills--IIRC not plaster, but I do remember his 
meditiations on what to use):

http://www.daycreek.com/

I'd think that anything well-sealed might work.

Although when I put a bit of linseed oil on the earthen floor--still wide 
open--some little animal came in and dug it out presumably because it seemed 
so edible.  Sigh.
..................
Aaron wants to know:
Im looking for anicdotes of plaster recipies for high use indoor areas ie; 
benches, window sills etc.  specificaly, additives that were successful for 
the hardening of a plaster.