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
56
150
15
2
139
570
10
3
*variable
815
desired effect
4
as fast as possible
510
90
5
56
425
10
6
167
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
56
150
15
2
111
315
15
3
167
570
15
4
*variable
815
desired effect
5
as fast as possible
510
120
6
17
425
15
7
28
370
10
8
139
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
56
150
25
2
111
315
25
3
167
570
20
4
*variable
815
desired effect
5
as fast as possible
510
180
6
7
425
15
7
13
370
10
8
67
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
56
150
40
2
111
315
40
3
167
570
30
4
*variable
815
desired effect
5
as fast as possible
510
240
6
4
425
30
7
9
370
30
8
36
40
0
*This rate varies based on what you want to accomplish. For instance, heat faster to fire polish, slower to minimize air bubbles.