I'm using Google Sketch - Up to do these , it's my first real foray into Sketch - Up.
This image shows part of the Reflector Shroud missing. The total area of reflector surface on this oven will be around 49 3/4 sq. ft.
I'm using a design called the 60/40 that Ken in Canada has supplied to me. My plan is double the size of Ken's oven, and construct it from 26 ga sheet metal. Here's Ken setting up his oven on a winter's day :