Firing Time
8.5 hrs
Peak
1828°F
Energy
26.7 kWh
Cost
$3
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Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Inputs
Result
Three segments: candling (100°F/hr to 250°F), ramp (200°F/hr to 1,000°F), final (300°F/hr to 1,828°F + 10 min hold). 4.5 kW × 70% duty × 10.5 hrs.
Inputs
Result
Two segments: slow ramp to 1,000°F, then 300°F/hr to 2,232°F with 15 min soak. 8 kW × 70% × 11.5 hrs.
A bisque fire to cone 06 takes 8–12 hours depending on kiln size and load density. A glaze fire to cone 6 takes 9–13 hours. Glass fusing and slumping are typically 6–10 hours including annealing.
Every firing has three main stages: ramp up (heating at controlled rates), soak (holding at peak temperature), and cool down (controlled or natural cooling). Bisque firings add a candling stage at 200°F to drive off moisture.
| Firing Type | Peak Temp | Typical Time | Energy Cost |
|---|---|---|---|
| Bisque (06) | 1,828°F | 10 hours | $3–$6 |
| Low Glaze (04) | 1,945°F | 8 hours | $3–$5 |
| Mid Glaze (6) | 2,232°F | 11 hours | $5–$8 |
| High Glaze (10) | 2,345°F | 14 hours | $7–$12 |
A medium studio kiln (4.5 kW) firing to cone 6 uses approximately 25–35 kWh per firing, costing $3–8 at typical residential electricity rates. The kiln does not run at full power the entire time; duty cycle averages 60–70%.
Most clay bodies within the same temperature range use similar schedules. However, thick pieces need slower ramp rates, and porcelain often benefits from a longer soak. Always follow the clay manufacturer’s recommendations.
Explore kiln scheduling, glaze estimation, clay shrinkage, and glassblowing tools.
Last Updated: Jul 24, 2026
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