Bevel edges at 45 degree for a good glue fit. I fit and glue reflectors to 60 degree bevel an glass frame, tape seams until glue dries. ...
This is a larger version of The Solar Baby that was in another instructable i did a while back. This one cooks better than the last one and can cook larger meals. It seals better and has better insulation. It has the curved back and pivoting sun finding system same as the Solar Baby.The hinged lid/reflector has removable pins and can be removed and inverted over the oven for a smaller stowage area which makes it good for RV ing The size of your oven depends on the size of the tempered glass you have.
I have cooked many meals on this oven while traveling. It cooks a great loaf of bread, I can cook a whole chicken in a couple hours. Keeps over 300 degrees on a sunny day. Easy to open, just lock pin in upright position and open.