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Seems like an opportunity to use sun and sand to construct 3D-printing oases in the middle of nowhere. https://www.youtube.com/watch?v=ptUj8JRAYu8 https://www.

by mmjaa 9y ago

Seems like an opportunity to use sun and sand to construct 3D-printing oases in the middle of nowhere. https://www.youtube.com/watch?v=ptUj8JRAYu8 https://www.youtube.com/watch?v=ptUj8JRAYu8 Wonder why this isn't working out as the "new construction technique" hit success that it seems, with a little optimisation, it could be?

microcolonel 9y ago
> Wonder why this isn't working out as the "new construction technique" hit success that it seems, with a little optimisation, it could be? Well, it's incredibly dangerous to set up an array of solar concentrating fresnel lenses and/or mirrors anywhere near human beings. Concentrating radiation on things which are becoming more and more shiny and/or refractive as you go can go very wrong, as you start having to manage the caustics of even the cloudy glass you end up making.