Hi Richard,

I use vinegar... Apple cider vinegar works pretty good too. I guess it's a bit stronger. I've also heard citric acid works well, but I've never tried it.

Regards,
Eric Wichman



On 2/5/2010 9:13 AM, Richard Kowalski wrote:
I picked up a few small oriented Taza from Geoff N. yesterday. One, the size 
and shape of a canine tooth, has a partial coating of what appears to be 
caliche around the middle.

I'm not ready to take a wire brush to it just yet, but I was wondering if there 
is another (non mechanical) way to remove it without affecting the surface 
below?

Thanks

--
Richard Kowalski
Full Moon Photography
IMCA #1081



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