Reflowing ovens and home ovens are totally different animals. Reflow ovens use closed loop temperature controllers. A ramping profile gently heats the board to

Reflowing ovens and home ovens are totally different animals. Reflow ovens use closed loop temperature controllers. A ramping profile gently heats the board to a preheat temp just below reflow (drives out moisture and other outgassing), holds it for a bit, then ramp to the final reflow temp and holds that for less than a minute (possibly seconds) before quickly backing down to preheat followed by a cooling cycle. Many manufacturers specify these times and temperatures in their datasheets for components as well. You can turn an electric toaster oven into a reflow oven with a cheap programmable closed loop temperature controller. Though I don't know how even the heating would be or how effective depending on the model.