| I think an oven could not work because when you open it, the hot air comes out. Then you insert the film. The film needs to be warmed up to the right temperature, and that is going to take a while because even when the air has the right temperature, it is not a good conductor of heat and does not store heat well. It would thus be cooled in the vicinity of the film for a moment.
So it would be pretty hard to control temperature and time of development. In the oven you would have to rely mostly on convection (and perhaps some radiation), while the metal of mummy's flat iron stores heat well, and its surface would not be significantly cooled down by the contact with the film.
Perhaps an FB paper dryer could work, but I think most can not reach 160 deg C. |