Amy Fuhrmann on tue 25 oct 05
I've been checking the Clayart archives about the use of CMC gum, but can't
find an answer to this one. Can you still use a batch of CMC solution if
it's gone rancid? I recently found some on a back shelf. It's a couple of
years old and has some interesting alien life forms growing on the
surface. Should I just pitch it? Also, what am I supposed to add to a
fresh batch to keep this from happening in the future? Would rubbing
alcohol work?
Fredrick Paget on wed 26 oct 05
> Can you still use a batch of CMC solution if
>it's gone rancid? .........what am I supposed to add to a
>fresh batch to keep this from happening in the future?
Pitch the bad stuff and make a new batch, It is not expensive .
I have had good results in CMC storage by adding a tiny bit of copper
sulfate (blue stone).
About a pea size in a half gallon jug of CMC should be enough.
--
From Fred Paget,
Marin County, CA, USA
fredrick@well.com
Charter Member Potters Council
jesse hull on wed 26 oct 05
My solution:
I refridgerate my CMC . The only problem I've had
since is that someone mistakenly through it out...
~jessehull -Curator.
www.jessehull.com
www.latticestructures.com
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