claybair on fri 22 oct 04
Carol,
I'm getting more even firings by placing a light load on the bottom,
densely packing the middle and staggering 1/2 shelves on top.
BTW I do not use 3 cone cone packs. The frugal in me figures I can tell by
how
far 1 self supporting cone goes over whether it has over or under fired.
I set program for ^5 with 15 minute soak, place a ^7 bar in the kiln sitter
and ^6 self support cone on each shelf.
The last 2 firings..... the ^7 bar bent tripping the kiln sitter which
shut down the kiln, ^6 cone was gracefully bent to indicate ^6 on top and
middle shelves was reached, the bottom cone was slightly less bent.
Note each kiln has a personality and once familiar with what colors and
flavors
it likes you have a happy kiln and great firings. My point........ what
works
for me might not work for someone else.... you gotta know your tools.
Gayle Bair - is sooooooo happy with 4 new Bison tools! I had to run down to
the studio
at 6am to trim pots I hastily made yesterday...... so nice, so sharp, so
well made...
Thanks Phil!
Bainbridge Island, WA
http://claybair.com
-----Original Message-----
From: Carole Fox
Hi Bill.
As Gayle said- L and L does not recommend it. Also, won't it lead to a cold
spot in that area of the kiln? I always have cone packs at each spyhole.
Usually, the bottom is slowest to hit cone 6, though I try my best to
compensate by turning up each section at a different rate (I have a manual
kiln). How would leaving the top hole open even out the firing? I sure would
love a more even firing.
Carole Fox
Silver Fox Pottery
Elkton, MD
thesilverfox@dol.net
----- Original Message -----
From: "william schran"
To:
Sent: Friday, October 22, 2004 10:09 AM
Subject: Re: Double Venting
> Carole wrote:>Last glaze firing was much better. I had the window opened
> in
> the studio and I left the top peep out for just the beginning of the
> firing.<
>
> Why not leave the top spy hole plug out for the entire firing?
> Willing to bet the results will be better for the glazes and a more
> even firing top to bottom. Put cone packs in top, middle & bottom to
> test.
>
> Bill
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