HI! First, thank you so much for the heating box idea! I was going crazy, because ever since cold weather, my jewelry pieces did not cure completely. And I didn’t know it’s because of the cold. So now I would like to make one for myself. Some heating pads turn off after 90 min, and I don’t think they will maintain the temperature all night.. Or will they? 🙂 I also found pads for animals, that can be turned on for longer, but maintain temperature 27-32C. I that to high for epoxy to cure? Thank you so much! Have a lovely day!