C6MSGL1 Firing Schedule

Mastering Glazes Cone 6

Six-step with controlled drops to 1000C and 760C

Start temperature assumed: 25°C
Step Rate to Temp °C Rate
To °F Hold Accum
1 55°C/hr to 105 99 221 60min 2:58  
2 200°C/hr to 1080 360 1976 0 7:51  
3 85°C/hr to 1200 153 2192 15min 9:30  
4 275°C/hr to 1000 495 1832 0 10:14  
5 70°C/hr to 760 126 1400 0 13:40  
6 Freefall°C/hr to 30   86   13:40  
*Rates are expressed as "Celcius/Fahrenheit degrees", temperatures as "Degrees celcius/fahrenheit"

From page 144 in Mastering Glazes.
Step 1 provides time for all remaining or residual water in glaze and clay to evaporate.
Step 3 approaches the final temperature more slowly and gives the glaze and body time to finalize their interaction with each other.
Step 5: Cooling more slow through the 1025 down to 800 range is important if you want multiple phases or crystal (and associated matte) effects to develop.

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