[Cob] cob sink

[Amanda Peck]

Bummer.  I was hoping that that change in color was to a mix with lime 
added. It was, but there was also portland cement.  I still wouldn't want to 
cut on it, but for other reasons.

Wood is a good material for water tanks also wine and whiskey barrels--baths 
and hot tubs if you keep them filled.  But you can easily have troubles with 
those pretty wood ice cream makers because wood goes through wet/expand 
dry/contract cycles.  I think the directions for them say to soak the wood 
in water at least overnight before you use them, or if you haven't used them 
for a good long time.  Otherwise they LEAK LIKE MAD!  Don't want this in a 
sink, particularly one where water might drip (or pour!) onto your cob.  The 
only possible exception I can think of offhand might be a huge burl--with 
tight and twisty grain--that you could carve into a sink, and even that 
might be better in a sink to wash you hands under running water in, not one 
where you filled it to wash your dishes.

There are alternatives--fired clay, glass, carved stone--might even find a 
piece of stone naturally shaped, mosaics with hydraulic lime (unfortunately 
mostly imported), might be able to use a massive piece of urbanite the way 
you do stone, it looks like Tony Wrench used at least one (almost certainly 
recycled) stainless steel sink in his aggressively Low Impact round home.

...................
Tim Ely wrote:
I emailed the web site and was told the sink was
actually made of cement.  Sorry.  What would be wrong
with a wood sink? As long as it is ecologically
harvested.
tim

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