Fresnel Lens DIY Knife Solar Metal Foundry DIY greenpowerscience

Using renewable energy Knife Making from the sun, a Solar Fresnel Lens becomes a foundry for metal like Zinc as it has a lower melting point than steel and can be easily melted in larger volumes with a Fresnel lens using concentrated sunlight. While a zinc knife will bend and can break with prying force it does work well for general cutting applications, Currently working on a hybrid system for large volumes of higher temperature metals. Note: the zinc is not burning, that is residue stuck to the cement crucible. Do not burn zinc or pennies. Inhaling newly formed zinc oxide can cause sever health issues = Metal Fume Fever.
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