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Cone 6 Glaze Firing with Slow Cool

Cone 6 Glaze Firing from Mastering Cone 6 Glazes by John Hesselberth and Ron Roy. If you are looking for an book on Mide-fire glazes we highly recomend Mastering Cone 6 Glazes.
We have been using this program for all of our inhouse glazes with excellent results.
If a kiln vent such as the Skutt Envirovent or Orton Ventmaster is installed it should be turned on during the entire firing.

Cone 6
(All temperatures are in Fahrenheit. All kilns fire differently, so use witness cones to ensure accurate results!)

Segments 5
Ramp 1 - 100Deg.
Temp 1 - 220
Hld1 - 0

Ramp 2 - 300Deg.
Temp 2 - 2000Deg.
Hld2 - 0

Ramp 3 - 108Deg.
Temp 3 - 2185Deg.
Hld3 - 15
This segment determines your final Cone temperature, so you may need to adjust Temp 3 or Hold3 for a Cone 6 witness cone to bend 90Deg in your kiln.

Ramp 4 - 500Deg
Temp 4 - 1900Deg.
Hld4 - 15

Ramp 5 - 125Deg
Temp 5 - 900Deg
Hld5 - 0