Practice question · Put in order
Arrange the stages of a firing schedule in order.
- Slow climb below 200 degrees to drive off residual water
- Climb to the target for the body and glaze
- Hold at the top of the schedule before cooling begins
- Controlled cooling, again slowly through 573 degrees
- Careful passage through quartz inversion at about 573 degrees
Hints
- The schedule starts with the water still in the piece.
- The inversion appears twice, at opposite ends.
Show the answer
- Slow climb below 200 degrees to drive off residual water
- Careful passage through quartz inversion at about 573 degrees
- Climb to the target for the body and glaze
- Hold at the top of the schedule before cooling begins
- Controlled cooling, again slowly through 573 degrees
Why
The inversion appearing at both ends of the schedule is the shape worth remembering. Everything between them is about reaching enough heat work; everything at them is about not cracking the ware on the way past.
Practise Firing
The app has 4 more questions on this lesson, and keeps your place in the course. Sculpture I is free to start.
More questions on Firing
- Why do pyrometric cones remain in use alongside electronic temperature control?
- Which are true of quartz inversion at about 573 degrees?
- The same glaze recipe produces the same colour regardless of kiln atmosphere.
- Sort each statement by whether it concerns the BISQUE firing or the GLAZE firing.
- Complete the account of firing.
- A kiln firing is defined as an entire schedule rather than reaching a single peak temperature. What practical…
- At approximately what temperature, in degrees Celsius, does quartz inversion occur?
- Match each firing atmosphere or concept to what it means.
- A body bisque-fired too high may fail to absorb glaze properly.