Guess I was trying to mention about the overall depth of the top like you have mentioned.
For example Ive noticed that some ovens for example may be for the top/lid 9" long and only 4" deep (Front to back) while others maybe 9" long and 9"deep (front to back)
These dimensions are purely fictious, not wanting to single out any one particular oven or design.
But Id almost think that having a deeper (front to back) oven lid would automaticly hold more heat so better cooking/baking??
I am going to build an oven and found some sheets of .019 gage to use, but have noticed some are built with about .020 gage or thicker, tht Ive found at Home Depot.
Sorry that Ive forgotten a plan I came across who built it but I was wondering what ever became of it? The frame was built like an erector set and covered with tin foil??
Allthough I have never even seen an oven in person other than photos Im thinking that the rear access door seems to be almost the easiest way and most efficieant way of checking the goods.
But opening and closing the hot panal could be a problem?
I think that having the oven built and using it opens up so many new and exciting options for the canoe/camping trip. Very cool