Skutt KilnMaster Kilns Manufactured between 2000 and 2006 - Manual (Page 21)

19
Hold
0
0
0
0
0
Temperature
250˚ F
1000˚ F
1300˚ F
1685˚ F
1938˚ F
Rate
80˚/hr
250˚/hr
150˚/hr
180˚/hr
80˚/hr
Segment
1
2
3
4
5
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0 2 4 6 8 10 12
Temperature (˚F)
Hours
250˚
1000˚
1300˚
1685˚
1938˚
Cone 04, Slow Speed
Cone Fire Mode
Description
The Cone Fire mode is extremely easy to
use but gives you access to many
advanced features. You only have to enter
three pieces of information—cone num-
ber, speed, and hold time. Cone values
range from Cone 022 through Cone 10.
Entering a cone number causes the con-
troller to look up the final temperature in
a 108˚F/hr Cone Table. You have three
speeds to choose from, slow, medium, or
fast. The speed chooses a ramp profile as
described below. Also, the Cone Fire
mode allows you to specify a hold time at
the final cone temperature. It is also possi-
ble to program a preheat or “soaking”
period to insure all the moisture is elimi-
nated from the ware prior to running the
full program.
The Cone Fire mode uses a method
patented by The Edward Orton Jr.
Ceramics Foundation that measures the
rate of firing during the last hour of the fir-
ing and adjusts the final temperature to
the correct cone temperature based on the
observed firing rate. This will insure con-
sistent results as the kiln elements become
weaker with normal wear from repeated
firing.
P ROFILES
Cone Fire–Slow
Slow is for hand thrown pottery, porce-
lain, and stoneware. The firing will take 12
hours* to complete. If you were to pro-
gram the segments for this firing, they
would look like the chart at right; howev-
er, they are automatic.
The graph at right illustrates the seg-
ments of a cone 04 firing in Cone Fire
mode, slow speed. The firing will take
approximately 12 hours to complete. The
heating rates are the same for all cones.
The temperature in segment 4 is 250˚ less
than the final temperature for the cone.
*Firing times are approximate, based on a
beginning temperature of 70˚F/21˚C firing to
Cone 04.