Rafael Molina on sun 29 aug 99
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Clayarters:
Thanks to Gavin and Chris for replying to my query. Their comments got me =
to
thinking. Their suspicions had to do with an oxidizing atmosphere or the
presence of Mg in the species of wood we use for fuel. I'm inclined to =
concur
with the former.
After we reach =5E 10 2381 F it takes about three more hours for =5E 13 2450=
F to
drop. At this point we close all of the primary air inlets, stoke hole =
door,
and active shelf damper. We also take all of the passive damper bricks out =
to
reduce the draw of the chimney to try to maintain the heat in the chamber. =
The
passive damper is located a few feet above the active shelf dampers.
Whatever wood happens to be on the grate in the firebox when we close up is =
all
that's left to burn. I have heard of a technique whereby the firebox is =
stuffed
with wood immediately prior to closing everything off. Is it possible that =
this
technique, which can be considered a type of reduction cooling, aids in the
development of the color in the clays, slips, glazes, and natural ash
accumulation?
Any help will be greatly appreciated.
Rafael
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