caution hot water sign for sale, brand-new and used.

10" plastic rigid fresnel lens Back quite a few years ago, I remember Edmund Scientific selling these as a "2000 degree solar oven" A friend of the family gave me one and being a curious kid, I had lots of fun burning things and experimenting. I remember burning paper, cardboard, melting plastic and even the asphalt on the driveway, woodburning and more. So pull the plug on the wii, ps2 and iphone and take the kids outdoors to learn and have fun!

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