I am not having problems, I am just asking if anyone has thoughts on determining glass mass variations for larger pieces, example you can melt a 12" x12" x 3" block shape open face and anneal and cool for a 3" thickness and melt a 48" x 48" x 3" block shape same open face and have that mass cool very differently, how might or would you adjust for these differences or would you as Bert said run the same program for both.
3" thick is an interesting challenge. You must be able to circulate heat beneath the mold. The glass will be losing more heat through the bottom than you can add through the top. You also have to take the mold/dams in to account. However, if both setups are the same, I'd use the same anneal program. As I said, the controller will take care of matching the cooldown profile. My understanding is that kiln configuration matters during the heatup, relative to thermal shocking the glass, but during the anneal, schedules are the same for side elements as they are for top, etc.
The best test to see if your anneal is successful is coldwork. If you can saw, grind, and polish the edges, you are probably good.
If somebody knows I am wrong about these issues, I'd certainly like to hear about it. I learned the thing about pendants, when a pendant maker piped in.