Practice question · True or false
The same glaze recipe produces the same colour regardless of kiln atmosphere.
Hints
- Consider copper in oxidation and in reduction.
- It reads green in one and red in the other.
Show the answer
False
Why
False, and dramatically so. Copper gives green in oxidation and red in reduction; iron behaves entirely differently in the two. A glaze recipe is a colour under a stated atmosphere and temperature, and the same recipe fired differently is a different glaze.
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?
- 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.
- Arrange the stages of a firing schedule in order.
- A body bisque-fired too high may fail to absorb glaze properly.