Mike,
Aside from the cosmetic thing I think it much preferrable that we get
the silver bonding somehow with the earthenware, then the lifetime
concerns only the strength of the ceramic, and not the silver flushing
out. (BTW, Roger, Frank, Quitcove, Everybody, Regarding more recent
messages than this one, I'm consulting several scientifically inclined
colleagues regarding the in depth chemistry, and will at some point get
back to you, hopefully soon.)

Currently we fire with gas, though village potters will likely use wood
as fuel. There is also the possibility that a light reduction atmosphere
would promote the bond without all the carbon deposit, but to establish
that is happening requires lots of testing. Choking off the air may
accomplish sufficient, light reduction, but in the past, to establish
the reaction is more or less complete we have thrown sawdust into the
kiln, i.e. heavy reduction. I will also be looking for answers from
potters, but many of those knowledgeable in firing have no clue about
silver.
Reid

Mike Devour said:
Honestly, I'd bet the silver would work whether or not it kept the
initial (alleged) colloidal particle charge, Reid. Even drying the
colloid probably dumps the silver back to the ground state.....

....You are attempting to use a lower firing to "set" the silver in
place by baking to above the metal's melting point. The kiln is a simple
one run on locally available fuel? A reducing is made by choking the air
supply, which produces soot, of course.

Your main problem is a cosmetic one, so you might consider a cosmetic
solution. Find a way to darken the clay so the sooting would not be so
obvious? Or find a way to prevent the sooting...

Have you asked this question on any pottery lists?






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