I just wanted to post the results of my several months long endeavor trying to heat (at least partially) my rented house with solar. The construction of the panel was unfortunately not photographed but there are a handful of finished and in use pictures.
I am building one of those solar furnaces, and I have just about everything worked out, except how to join the aluminum cans. Here are the questions I have:
1) Is soldering a viable option? If I do solder them, should I use flux, or will the acidic flux eat through the thin aluminum cans?
I think this was wicked cool. Super Cheap. On my to do list.
home made solar air heater/finished
Article with more specifics