Celsius Firing Schedules for Thick Projects

Please note: the schedules below are guidelines only, not strict rules. Times and temperatures may be adjusted based on the nature of your project. To use these schedules for slumping, set the target temperature in the "variable" step to 668 - 678 dependeing on your desired results.
1/2 -inch Thick
Step
Rate
(per hour)
Target Temp.
Hold
(minutes)
1
55
150
15
2
140
570
10
3
*variable
815
desired effect
4
as fast as possible
510
90
5
55
425
10
6
150
40
0
*This rate varies based on what you want to accomplish. For instance, heat faster to fire polish, slower to minimize air bubbles.
1 -inch Thick
Step
Rate
(per hour)
Target Temp.
Hold (minutes)
1
55
150
15
2
110
315
15
3
165
570
15
4
*variable
815
desired effect
5
as fast as possible
510
120
6
4
425
15
7
5
370
10
8
140
40
0
*This rate varies based on what you want to accomplish. For instance, heat faster to fire polish, slower to minimize air bubbles.
1.5 -inch Thick
Step
Rate
(per hour)
Target Temp.
Hold (minutes)
1
55
150
25
2
110
315
25
3
165
570
20
4
*variable
815
desired effect
5
as fast as possible
510
180
6
2
425
15
7
3
370
10
8
28
40
0
*This rate varies based on what you want to accomplish. For instance, heat faster to fire polish, slower to minimize air bubbles.
2 -inch Thick
Step
Rate
(per hour)
Target Temp.
Hold (minutes)
1
55
150
40
2
110
315
40
3
165
570
30
4
*variable
815
desired effect
5
as fast as possible
510
240
6
1
425
30
7
2
370
30
8
10
40
0
*This rate varies based on what you want to accomplish. For instance, heat faster to fire polish, slower to minimize air bubbles.