Solar Box Oven
This is a solar box oven aI made out of 3/4" plywood and black granite squares. The reflector is 14" plywood with foil tape. I used some metal rods that tighten through a sink stopper part to hold the reflector in position.
It resists our gusty trade winds, and averages about 190°F. My goal with this one was to test the effectivity of insulation materials, this is why it is just 3/4" plywood so far.
Next I will add isulation panels to the interior walls and see how that impacts temperature.
It appears that a solar cooker is a more efficient use of solar energy for cooking than a solar oven is. A solar oven is more flexible as it is less dependent on the type of cooking vessle.