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This large Spot Fresnel Lens easily melts through cement with concentrated solar power from the sun. LARGE 44″ X 34″ FRESNEL LENS 3600 DEGREES F. SUPER HOT CONCRETE MELTING.
This is the new Fresnel lens we have been working on. This Fresnel UV resistant solar lens has a different surface opposite the Fresnel Side that actually transfers maximum light …
MUSIC IS GARAGEBAND NOT “Laurence Watkins-Blues for You” “Laurence Watkins is copyrighting ROYALTY-FREE music. This test incorporates a secondary glass lens just short of the focal point allowing most of …