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Re: Re: Sand 3d printing (23/02/22 21:06:29)
    It shows the power of a 2 square meter Fresnel lens in the desert sun.

    But for recysling I would rather he used it on discarded glass wool that otherwise would have ended in a landfill. Destroying sand is what he did.

    In the area of our cabin_by_the_sea it is mandated that the original landscape must be recoverable when a building is removed. So there are limitations on the techniques permissible. Also, burning bonfires on bare rock is forbidden because it accelerates erosion.
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Re: Re: Sand 3d printing