Applying and firing
OUR CRYSTALLINE GLAZES
Application Instructions
(For best results, check out our YouTube video on how to apply KJ Glazes)
• Apply in three layers:
• First layer: Coat the entire vessel.
• Second layer: Start 1/3rd of the way up from the bottom of the vessel.
• Third layer: Start 2/3rd of the way up from the bottom.
• Overlap each brushstroke by 50% with the previous one.
Caution:
This glaze will run! Fire every pot in glaze catcher!
Do not apply the glaze too thick or too thin. Applying too much glaze will prevent crystals from forming, while applying too little will result in poor background coverage, diminishing the overall effect.
Firing Instructions for Crystalline Glazes
Firing crystalline glazes is a complex process, but with our carefully developed schedule, you can achieve the best possible results.
For Kilns with a Slow-Cooling Feature:
• Set the kiln to maximum power and heat to 1267°C (2313°F).
• Cool down to 1150°C (2102°F) and hold for 45 minutes.
• Cool to 1100°C (2012°F) and hold for 30 minutes.
• Cool to 1050°C (1922°F) and hold for 20 minutes.
• Cool to 1000°C (1832°F) and hold for 20 minutes.
• Cool to 960°C (1760°F) and hold for 20 minutes.
This firing schedule will allow you to grow both primary and secondary crystals, enhancing the unique beauty of your glaze.
For Kilns Without a Slow-Cooling Feature:
• Start the firing process the same way, heating the kiln to 1267°C (2313°F).
• Once the kiln reaches the peak temperature, let it cool naturally to around 1150°C (2102°F), then set the power to the minimum setting and hold for 45 minutes.
• Repeat the same process for each step in the schedule, adjusting the power to the minimum setting and holding for the specified time at each temperature
For Manual Kilns:
• After reaching the top temperature of 1267°C (2313°F), let the kiln cool naturally for around 30 minutes.
• Set the power to low and hold for 45 minutes at around 1150°C (2102°F).
• Continue to let the kiln cool for around 30 minutes between each step, following the same hold times as outlined in the schedule above. For each step, set the power to low and wait the designated time before cooling further.