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Published on Jul 3, 2006
18" Parabolic solar concentrator burning cardboard. On a clear sunny day it is usually much quicker for items to combust. Should have cleaned the mirrors first also :)
yes, its a satellite dish with mirrors. They are stuck on with silicon. They stick very well and little prep work is needed to the dishes surface.
I've also converted the LNB (the antenna usually found on the end of the dish) from the dish into a device to heat water. Has 2 Copper tubes entering the sealed LNB, 1 drains into the lower body, 1 drains from the focal area of the feedhorn.