Well just for ideas to give you elements can be either the household oven type, or industrial elements. Do a quick search on McMaster Carr or Grainger and you will see a few elements available. Each has different wattages they give off in heat, take different voltages, ie 120 or 240, and different thicknesses, which I am not real sure what that does. Maybe thicker they are the higher wattage they can offer, I forget right now. They run at a varied price, household elements, I think run about $40 bucks a piece and may put out about 2000 watts. Now picture this, say a 7' x 4' x 4' oven needs 16,000 watts to heat up and maintain 400 degrees at decent speed of temp rise. You would need 8 household elements to get the 16,000 watts, ie $320 bucks, plus temp controls and etc... The industrial elements would would cost less to do the same, but still need controllers, temp probe, etc... Building these is not a quick job, they take time and thought to construct correctly, so make sure you know what you are doing, or you will waste alot of money and have a pile of junk. I do not have pics of any of my fan setups, and to be quite honest, I still experiment and change the setup from time to time. My digi camera is broken and I need to buy another one, but I have other things I want more than that right now, so I am cringing and trying to forget about it.
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