Getting ready to build a gas oven, Using 1/8inch sheet metal and 1inch square tubing for the frame. Plan on heating it using propane heat lamps (like the one that comes on the columbiacoaitings heat lamp) Looking to build a 5x5x5. Just seeing if anyone has any tips or suggestions. Going to ceramic coat the inside to help it heat up faster. Do you thing two heat lamps would be suffcient enough to heat it up? thanks!