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.
|1||55°C/hr to 105C||99°F/hr to 221F||60min||2:58|
|2||200°C/hr to 1080C||360°F/hr to 1976F||0||7:51|
|3||85°C/hr to 1200C||153°F/hr to 2192F||15min||9:30|
|4||275°C/hr to 1000C||495°F/hr to 1832F||0||10:14|
|5||70°C/hr to 760C||126°F/hr to 1400F||0||13:40|
|6||Freefall°C/hr to 30C||0°F/hr to 86F||13:40|
Sign up at the home page.