Keep the kiln lid or door closed when the kiln is not in use.
17
Cone Offset Settings
Note: You must have a Cone-Fire program in active memory before
you can change Cone Offset.
°F Setting
°C Setting
Result
0
0
No adjustment
5
3
Kiln will fire hotter
10
6
Kiln will fire hotter
15
8
Kiln will fire hotter
20
11
Kiln will fire hotter
-5
-3
Kiln will fire cooler
-10
-6
Kiln will fire cooler
-15
-8
Kiln will fire cooler
-20
-11
Kiln will fire cooler
You can change the cone offset or remove it at any time.
A cone offset is also removed when the Reset option is
used. (See RST, page 24).
Interpreting Cone Bending to
Set a Cone Offset
Position the witness cones in the kiln according to the in-
structions on page 8.
The cone bent to 6 o’clock: No calibration in Cone Off-
set needed. The self-supporting cone has fired to maturity
when the tip is fairly even with the cone base.
The cone did not bend far enough: Use a positive Cone
Offset number for a hotter firing, such as 10 (°F).
The cone bent too far: Use a negative Cone Offset for a
cooler firing, such as -10 (°F).
Note:
Do not be overly concerned with achieving
an exact 6 o’clock bend. The difference between a 3
o’clock and a 6 o’clock bend is only a few degrees of
temperature.
When Cone Temperature
Is Off More Than 20°F/11°C
The maximum amount that Cone Offset can change the
temperature is 20°F/11°C. When the temperature is off
more than that amount, correct with Thermocouple Offset.
See TCOS, page 20.
COOL / Slow Cooling for Glazes
Add Slow Cooling to Cone-Fire Programming
Slowing down the cooling rate in Cone-Fire mode can
totally change the appearance of many glazes. Copper red
glaze, for instance, is enhanced by cooling slowly starting at
around 1750°F / 954°C.
For the full benefit of slow cooling, you can bring the
temperature back up several times as the glaze cools. You
would need Ramp-Hold mode to do this. See pages 12-15.
You can also slow the cooling in Cone-Fire mode by
turning on the Slow Cooling feature. It will appear as the
[COOL]
prompt during Cone-Fire programming. But first
you have to turn on Slow Cooling in options. If you don’t
turn on the option, the Slow Cooling prompt will remain
hidden in Cone-Fire programming.
1
First, program a Cone-Fire. See page 10.
2
From
[IDLE]
press the
Up Arrow
repeatedly until
[COOL]
appears.
Note:
With each
Up Arrow
key press, you will see
the next option. When you see
[EXIT]
, press the
Up Arrow
again to see more options. When
[OPT2]
appears, press
Start/Stop
. That will take
you to more options. Follow the same steps to go
past
[OPT3]
.
1
When you see
[COOL]
, press the
Start/Stop
key.
2
Using the
1
key, select
[YES]
or
[NO]
. If you want to
use Slow Cooling, select yes. If you never use it, se-
lect no. Then press
Start/Stop
.
[IDLE]
will appear.
General Options
DELA / Delay the Firing for Later
Most controllers come from the factory with delay-fire
added to the programming. After you program a firing, you
will see
[DELA]
in the display window. If you want the kiln
to turn on later, enter the delay time with the arrow keys.
Use this format:
Hours.Minutes
Example: 4 hours, 30 minutes = 04.30
Enter hours to the left of the decimal point and minutes
to the right of it. If you don’t need a delay, leave the setting
at 00.00.
The delay time will zero out after each firing. You can
change the way delay works by adjusting it in Options as
follows.
1
From
[IDLE]
, press the
Up Arrow
key to get to
[DELA]
.
2
When
[DELA]
appears, press the
Start/Stop
key.
Using an arrow key, scroll through the following
choices. To select a choice, press
Start/Stop
.
I
[DFLT]
This is the default factory setting.
[DELA]
ap-
pears after you enter a program and before you start the
kiln. The delay time that you enter zeroes out after each
firing.
I
[ALL]
The
[DELA]
prompt appears before you start a
firing, just as above. However, the delay time doesn’t
zero out after each firing. It stays in memory for all your
future firings or until you change the delay time again.
I
[OFF]
This turns off the
[DELA]
prompt. If you select
Off, you won’t see the delay prompt again before firing
the kiln. Turn the delay prompt off if you never use it.
That will help streamline your programming steps.
