Orton Cones

Mini Bar Cones

Large Cones

Self Supporting Cones

Item # BRB

Item # ORB

Item# SSB

$7.50 per Box

$8.75 per Box

$8.75 per Box

019 06 06
014 05 05
06 04 04
05 03 03
04 02 02
03 5 5
02 6 6
5    
6    
Pyrometric Cone Temperature Equivalents
Cone
Large Cones
Self-Supporting Cones
Junior
and
Bars
  Heating Rate °F/Hour (last 90-120 minutes of firing)
108° 270° 108° 270° 540°
022 N/A N/A 1087 1094 1166
021 N/A N/A 1112 1143 1189
020 N/A N/A 1159 1180 1231
019 1249 1279 1252 1283 1333
018 1314 1350 1319 1353 1386
017 1357 1402 1360 1405 1443
016 1416 1461 1422 1465 1517
015 1450 1501 1456 1504 1549
014 1485 1537 1485 1540 1598
013 1539 1578 1539 1582 1616
012 1576 1616 1582 1620 1652
011 1603 1638 1607 1641 1679
010 1648 1675 1657 1679 1686
09 1683 1702 1688 1706 1751
08 1728 1749 1728 1753 1801
07 1783 1805 1789 1809 1846
06 1823 1852 1828 1855 1873
05 1886 1915 1888 1911 1944
04 1940 1958 1945 1971 2008
03 1987 2014 1987 2019 2068
02 2014 2048 2016 2052 2098
01 2043 2079 2046 2080 2152
1 2077 2109 2079 2109 2163
2 2088 2124 2088 2127 2174
3 2106 2134 2106 2138 2185
4 2120 2158 2124 2161 2208
5 2163 2201 2167 2205 2230
6 2228 2266 2232 2269 2291
7 2259 2291 2262 2295 2307
8 2277 2316 2280 2320 2372
9 2295 2332 2300 2336 2403
10 2340 2377 2345 2381 2426
11 2359 2394 2361 2399 2437
12 2379 2415 2383 2419 2471
 

 We carry Orton Cones.  Orton is the leader in temperature measurement and control. Cones are crucial in successful firings of your work - don’t take chances with cheaper brands. Orton Cones are the best!

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                 Kiln Sitters or Controllers
  A Kiln Sitter is a shut-off device, but should not be            considered the determining factor with reference to proper heat work. The cone in the sitter has additional variables that affect its melt: proximity to the kiln wall and elements and the weight of the sensing rod resting on it. When a Junior Cone is used, the tapered shape can cause variances if positioned too far right or left. Because of these other factors, a kiln sitter cone can deform prematurely, shutting down the firing before proper heat work is complete.

Programmable Controllers
Programmable controllers are much more accurate than kiln sitters if you pay attention to your ramp rates - especially toward the end of the firing. By following the heating (ramp) rate on Orton’s Cone Chart for at least the last 90-120 minutes of firing, you can be fairly certain that the degree temperature equivalent on the chart will be the end point of your firing.
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Facts About Cones
Cones measure the effects of time and temperature and is called heat work. The cone number determines the measurement of heat work. The cone chart is the temperature at which a cone bens. Glazes and clays are made to mature at specific cone numbers. When a clay or glaze is labeled cone 6 , it most be fired cone 6 to mature.
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Prices Subject to Change with out Notice.

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