Allen wrote: > I am thinking of making a solar melter. > > I understand that the design is nothing particularly difficult, but I wonder if > there is any necessity to use glass on top, or if plastic will work as well -- > assuming it does not melt. Plastic works just fine, Allen, at least here in Louisiana. I use two sheets with a quarter-inch gap. They sag a little, so I put in a cross-bar. No problems. Walter Weller