[Cob] Finish on a cob couch

[Amanda Peck]

I can remember my mother saying that trying to heat raw linseed oil oneself 
was dangerous--it might explode, but I can't at the moment find any links, 
and I wouldn't really trust my memory on that.  I did find that the 
boiled--oxygen and dryers added--dried a lot quicker.  The boiled (maybe 
because of the added oxygen, maybe all of the linseed oils) has a bad 
reputation for spontaneous combustion--self-igniting, the British call it, 
if you're not careful with your rags. Tung, hemp, other fine oils are a 
whole lot more expensive and harder to find than the linseed, especially in 
small-town America.

It will put a gold cast on whatever surface you are using. Not so good for 
Kim's bench.  I think you're right, that a plain lime render might be the 
best for that, although a clay/sand coat below that would cover the fiber 
sticking out.
.........

Be careful of the linseed oil.   Don't get the kind that has been processing 
and has had chemicals added to it.   Also the raw pure lineseed oil has to 
be heated before use, I believe I remember.   Please research this.   This 
would give you a earthen color wall.

Hemp oil is also a very good oil to us.

But, lime is the traditional rendering for earthen walls.

Darel

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