I am building an oven, 24x30x60 tall. I am concerned that the top will be far hotter than the bottom. My plans are to have two sets of oven elements, the primary ones on the bottom and a second set for preheating on the top. A fan does not seem like a great idea as it is likely to stir up dirt and impurities. Has anyone experimented with putting heat baffle over the element and letting the air rise through a "duct" to the top. Then the rising air would force circulation. Am I wasting my time on a non-issue?
