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kiln normality

updated fri 28 feb 97

 

Louis Katz on tue 4 feb 97

Normal is a hard one to answer.
Normal for me in school situations is to fire with a switch on low and
the lid propped overnight to make sure the ware is dry, then close the
lid for one hour, then all switches on low for one hour, then all on
medium for one hour, then all on high. How long did it take to fire off?
I don't know. Of course there are all sorts of vartiations in a school
environment, thick pots, wet pots huge poorly constructed things, etc.
etc.

Best advice is to keep track of how hot your kiln gets on each setting
and compare that to your old kiln. Spit in the kiln to determine 212
degrees farenheit (roughly, O.K. about elevation, salts in spit etc.),
use newsprint to gauge Farenheit 451 (also a book by Bradbury), and
tturn off the lights and judge red heat, but don't be fooled by the glow
from the elements.

Louis
By the Way visit my web page, images of my work are in the midst of
getting up, but I have some writing on my articles page stretching back
to the early eighties.
http://www.tamucc.edu/~lkatz

B J Hulley wrote:
>
> ----------------------------Original message----------------------------
> I hope someone here can tell me if this is a normal cone 06 bisque firing
> time for Skutt C231 (interior 22.75", depth 27" ,amps 48.9). Low-4 hours
> (all plugs out), Medium-2 hours (all plugs in), High- 1 hour and 15 min
> for sitter to drop (06 junior in sitter, senior 06 in 3rd from bottom
> peep beginning to bend), then I restarted and it took 16 more minutes for
> senior 06 to flatten. I am asking because:
> 1. This is the first Skutt I've had anything to do with (and it's an
> oldtimer though in beautiful shape) and 2. The High part of any 06 firing
> of the other same size kiln (Olympic) has always been around 5 hours (but
> I've always loaded that kiln super heavy). I would consider this one was
> a light load (20 wine goblets, 12 mugs, 8 soup bowls, 3 planters-10", 7
> vases-20"and some tester tiles).
> If this kiln is firing too fast what would be a more reasonable schedule?
> (The multimeter read perfection at the cord so I guess the elements are
> new). Nothing cracked but next is the glaze load (I'm sending reglazers
> through just in case).
> Thankyou very much in advance. We had a balmy 40F in Vernon, BC, CAN.
> Groundhogs had to wear sunscreen.

--
Louis Katz lkatz@falcon.tamucc.edu
Texas A&M University Corpus Christi
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