I’m familiar with this from a couple of interests, too. One is trying to decarboxylate cannabis to prepare it to make edible goods. You want to hold it under 2

I’m familiar with this from a couple of interests, too. One is trying to decarboxylate cannabis to prepare it to make edible goods. You want to hold it under 250° for a period of time, and the quality of the temperature controller and other factors about your oven or toaster oven do make a big difference. Overheating can ruin it fairly easily, and underheating fails to produce full potency. Also we run into this in a glassblowing. One wants borosilicate items to rest in the kiln somewhere between 1040 and 1100 F (~600C). The simplest kilns have a infinite switch, same as an electric range. With attention and experience, it’s possible to make it steadily hold a temperature. More common these days is a digital controller. The simplest is something like a Fuji PXR3. However, just having a digital controller does not ensure that your kiln stays at the target temperature. The controller must be calibrated properly for the oven size, elements and insulation. In most kilns elements are either on all the way or off, so controllers use a relay to control power. The more sophisticated ones do this very quickly, like flickering. Typical controllers do cycles of a few seconds. If the controller is not calibrated properly, which is common in glass studios, the kiln will overshoot or undershoot the target temperature repeatedly by up to 50°. It’s complicated by the fact that these kilns sometimes have doors that remain partially open, and the amount of mass of glass inside affects the thermal characteristics, too. For a very precise small oven, the ones that they make for enamel or firing dental porcelain are pretty good.