[jamesqf]

Originally Posted by order99

I'll have a Window heater of my own in a few weeks, but it's going to look a bit more like this:

Make: Online : Soda can solar panel

If you ever find the trick of cutting the tops & bottoms of the cans, please let me know. I've tried various hole saws & cutters, but they all snag, and bend the thin aluminium of the can walls.