On Sun, 18 Jul 2010 15:03:44 -0700 (PDT), David Robinson wrote:

I've tried the "does water soak in" test and the "does striking it
with a metal object mark it spark" test. Water doesn't soak in, but
the metal object doesn't spark either.

What was the metal? Brass won't spark for instance... Not really sure
what would be a conclusive metal to use iron/steel but probably not
stainless steel.

--
Cheers
Dave.