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From page 144 in Mastering Glazes.
Step 1 is to provide time for all remaining or residual water in glaze and clay to evaporate. However 220F may not be high enough, 250F is usually needed (and will not fracture ware). This segment should also have a hold, at least 60 minutes.
Step | °C | °F | Hold | Time | |
---|---|---|---|---|---|
1 | 55°C/hr to 105C | 99°F/hr to 221F | 0 | 1:58 | |
2 | 200°C/hr to 1080C | 360°F/hr to 1976F | 0 | 6:51 | |
3 | 85°C/hr to 1200C | 153°F/hr to 2192F | 15min | 8:30 | Confirm with self supporting cone |
4 | 275°C/hr to 1000C | 495°F/hr to 1832F | 0 | 9:14 | |
5 | 70°C/hr to 760C | 126°F/hr to 1400F | 0 | 12:40 |
Typecodes |
Oxidation Firing
|
---|---|
Oxides | Sm2O3 - |
Firing Schedules |
Plainsman Cone 6 Slow Cool
350F/hr to 2100F, 108/hr to 2200, hold 10 minutes, fastdrop to 2100, hold 30 minutes, 150/hr to 1400 |
Firing Schedules |
Plainsman Cone 5 Drop-and-Hold Slow-Cool
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