From another thread: I don't think a toaster oven would do the job. I have located a used "barbecue oven" and thought about using that for the purpose after removing the rotating split, but probably won't go that route either. The problem with those types of ovens is that they depend on direct infra-red radiation from the heating coils to singe or toast the food, and the rotator keeps it from burning by preventing each part from basking in the radiant heat for too long. If the transformer stank up the place, the temperature was probably too high and may have caused permanent damage. That happened to me once, when the paper insulation on the windings of a transformer turned brown and brittle after it was baked for several hours. An immediate use I would have for such an oven is to bake out a Collins PTO after making necessary repairs, before replacing the hermetically sealed cover. The problem is, you don't want to heat the object by direct IR radiation, but by placing it in a pre-heated chamber where the walls of the enclosure and the air inside are already at temperature. Toaster and barbecue ovens don't even have insulation on the walls of the enclosure; on the contrary, they have ventilation louvres instead. In the past I have baked small transformers and coils in a regular baking oven, but that was back when we had an electric stove. Now, we have a gas kitchen stove, and I don't trust gas heat because one of the products of combustion process is water, just the opposite of what this baking process is intended to do. An electric oven produces dry heat. A quick on-line search for a compact portable baking oven showed them to be very expensive, hundreds of $$$, except for toaster ovens, although cheaper ones may exist. This oven needs robust walls with plenty of thermal inertia to hold the heat, and the heating element must be placed so that direct IR radiation from the coils won't toast the surface of whatever is being heated. This probably calls for something home-made. A concrete or ceramic enclosure would work. I have an old electric hot plate, and one thought is to find or make a small box out of concrete or fired clay and set that on top of the hot plate, which would be controlled by a variac until the chamber reaches a measured temperature. I could even buy the used barbecue oven and modify it in similar fashion. I am open to other suggestions, since this is planned to be an upcoming winter project.