Jennifer F Boyer on sat 17 feb 01
Hi All,
I just took at teapot workshop with Pete Pinnell and among the
many(MANY) offshoot conversations was one about tuning a
reductin gas firing. Pete's premise is that potters really
don't have the tools to to know what's happening in the kiln
unless they have oxyprobes.
His point is that most of the commonly used obvious clues about
a firing are actually overkill where reduction is concerned, and
that if you fire efficiently (energy wise) the clues are too
subtle to read by eye. For instance he says you never need to
see any carbon residue on your spies.
He says he has experimented with this by having a bunch of
potters look at a kiln firing at several different points during
a firing. He sends them out of the room and changes the kiln
settings. He reads the oxyprobe and then invites them back in to
try to guess what is happening with the atmosphere in the kiln
without looking at the probe readings. He says they never get it
right by eye!
I have a probe, and l love it. I'm wondering if people think
Pete's right. Are a lot of potters losing profits up the stack??
Take Care,
Jennifer
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Jennifer Boyer mailto:jboyer@adelphia.net
Thistle Hill Pottery
95 Powder Horn Glen Rd
Montpelier, VT 05602 USA
802-223-8926
http://www.thistlehillpottery.com/
Never pass on an email warning without checking out this site
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Dannon Rhudy on sat 17 feb 01
.......workshop with Pete Pinnell ... premise is that potters really
>don't have the tools ....unless they have oxyprobes....
.... if you fire efficiently (energy wise) the clues are too
>subtle... never get it right by eye!
..... Are a lot of potters losing profits up the stack??.....>
I have great respect for Pete Pinnell, and I have no doubt
that one can fire a reduction kiln more efficiently using
an oxyprobe. It is likely that often more energy than
necessary is used in firing. However, it is possible to
get reliable results firing without an oxyprobe. Many do
it all the time, so the evidence is there to be seen.
If one wants and can afford an oxyprobe - great. If not,
pay attention, you'll still get good pots.
regards
Dannon Rhudy
Connie Christensen on sat 17 feb 01
Jennifer wrote:
....I have a probe, and l love it. I'm wondering if people think
Pete's right. Are a lot of potters losing profits up the stack??
Hi Jennifer
I just got an oxyprobe and would like to know what numbers you use for
your reduction. I'm in a rather new studio situation and am trying to
figure out the kiln and oxyprobe at the same time.
Connie
Jennifer F Boyer on sun 18 feb 01
Maybe others can help more than I can with this. I actually fire
neutral, using a setting of about 1.0 on the probe .
Pete suggests reducing from cone 012 to 04 (around 90 to 115
temp on the probe) using 5.5 or 6 on the probe. Then he
suggests light reduction from cone 04 to 9. In my notes I have
that at higher temps the probe atmosphere reading might need to
be higher.
I'd love to hear what readings others are using....
Jennifer, who did reduction firing in college when carbon was
the thing....
Connie Christensen wrote:
>
> Jennifer wrote:
> ...I have a probe, and l love it. I'm wondering if people think
> Pete's right. Are a lot of potters losing profits up the stack??
>
> Hi Jennifer
>
> I just got an oxyprobe and would like to know what numbers you use for
> your reduction. I'm in a rather new studio situation and am trying to
> figure out the kiln and oxyprobe at the same time.
>
> Connie
>
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Jennifer Boyer mailto:jboyer@adelphia.net
Thistle Hill Pottery
95 Powder Horn Glen Rd
Montpelier, VT 05602 USA
802-223-8926
http://www.thistlehillpottery.com/
Never pass on an email warning without checking out this site
for web hoaxes and junk:
http://urbanlegends.about.com/science/urbanlegends/cs/nethoaxes/index.htm
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
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