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managing computer firings

updated sat 3 apr 04

 

Jeanette Harris on wed 31 mar 04


A few months ago, I got a Skutt computer kiln and have been
experimenting with different programs.
Some have worked well; some not so well.

I've tried using the programmed cone settings -- cone 6 and cone 5
and the results were okay.

The last firing I opened this morning was one using John's program as
presented at NCECA. I have a waterfall brown-like glaze that really
surprised me. It was much more matt, yet ran like crazy. My
thinking is that it's because of the slower cooling cycle that made
the matt result.

Another surprise was the cones placed on each shelf were all flat and
stuck to the shelves. They were fives and sixes.

Now, my question is: When firing with a computer settings and a cone
goes to the right position, how do you go to the next computer
segment? Do you push "Enter" and the program moves on?

Thanks in advance for you response.

Cheers,
Jeanette

Arnold Howard on wed 31 mar 04


From: "Jeanette Harris"
> Now, my question is: When firing with a computer settings and a cone
> goes to the right position, how do you go to the next computer
> segment? Do you push "Enter" and the program moves on?

On most models of controllers, the Ramp-Hold mode has a Skip Segment
feature. You would press Skip Segment and then Enter.

Example: You have programmed 2167 deg. F. for a cone 5 glaze firing,
followed by a segment for controlled cooling. Watching the witness cone
through the peephole, you notice that cone 5 is bending at 2150 deg. Use
Skip Segment to end the firing segment and begin the one for slow cooling.

Make a note of the temperature at which the cone bent. Program that
temperature for the next firing.

If you are using an earlier controller that does not have a Skip Segment
feature, you can shut off the kiln by pressing Stop. Then reprogram it,
changing the temperature of the segment you wanted to skip. Turn the kiln
back on. The controller should jump to where it left off when you turned the
controller off. It takes just a moment to do that.

Sincerely,

Arnold Howard
Paragon Industries, L.P.
arnoldhoward@att.net

Wes Rolley on wed 31 mar 04


At 11:17 AM 3/31/04 -0600, you wrote:

>On most models of controllers, the Ramp-Hold mode has a Skip Segment
>feature. You would press Skip Segment and then Enter.

On my Skutt, the Skip Segment is not a single button, but a sequence that
is well documented in the user manual, if you know what you are looking
for. It works for me. but I still have to look it up after not firing for
a month or so.




"Art and thought. That's what lasts. That's what continues to feed
people and give them an idea of something better."
-- Susan Sontag

Wesley C. Rolley
17211 Quail Court
Morgan Hill, CA 95037
(408)778-3024

Ivor and Olive Lewis on thu 1 apr 04


Dear Jeanette,
Your comment <<...Another surprise was the cones placed on each shelf
were all flat and stuck to the shelves. They were fives and
sixes....>
One of the things which must be remembered when firing down slowly, or
crash cooling by a fixed amount and then arresting to give an
isothermal treatment, is that we are still pushing energy into the
kiln. So heat/work still continues and those reactions which have
started continue, even if at a slower pace. This applies to clay,
glaze and cones.
I hope you get your programs set to your satisfaction.
Best regards,
Ivor Lewis. Redhill, South Australia
.