Frank wrote an instructable about a solder reflow oven made from a toaster:
As I get more serious into my electronics hobby, I need to work with more SMD components. Some component packages are very difficult or impossible to solder with a traditional soldering iron. To solve this problem, I decided to hack a toaster oven to become a reflow soldering oven
Temperature is read using a thermocouple temperature sensor and the AD595AQ TC amplifier. The heater is switched on and off using a solid state relay, and the temperature profiles are displayed on a graphic LCD. All of this is controlled with a ATmega32U4 microcontroller, which also provides USB firmware updates and data logging capability.
Via the forum.