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!
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.
- 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.