I am trying to make my own homemade cool hood, i was wondering if there is any input on this i have a reflector now i was going to take a piece of glass i got out of a picture frame and bend up the ends on the reflector and 2 way tape the glass to the inside lip were i bent it, then add 2 cardboard sides and but holes in them for ventilation the glass i have is 2mm thick is that to thin or will it brake from the heat?