[Cob] Shellac

[Lance Collins]

Hi Joel,

My memories of shellac on furniture was that it was an attractive finish 
but easily marked and hard to repair.  Polyurethane is much easier to apply 
and very much more durable.

Also shellac is a dark brown.  I like the light colour of most 
cob.   Finishing cob with a dark stain seems an odd thing to do.

Lance



>I was reading about shellac here:
>http://www.assoc-restorers.com/r-articles/shellac.html
>
>I remember using it in middle school woodshop class, but
>knew little else.  Shellac is derived from the cocoons of
>little bugs in south asia.  The bug makes it in part from
>tree sap, so it is part resin in origin.  It's primary
>uses in the modern world are in the pharmeseutical industry
>to coat pills or candy (M&M's were once coated in shellac)
>
>It has been used as a wood finish for hundreds (thousands)
>of years in India.  I wonder if it would make a good floor/wall
>etc. finish for cob?  Shellac resists water vapor very well,
>better than polyeurathane (not that I want it in my house...)
>Sounds useful to me anyhow...  The article has instructions
>for how to buy shellac in flake form and mix it yourself.
>
>I'm intrigued!
>
>
>Joel
>
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