Make: Online : Sun-melted sand for roads

Sun-melted sand for roads

Xlg Sand
Fun idea from Modern Mechanix 1933 - Link.

Comments

Oldest comments listed first.

Posted by: Kevin on December 12, 2007 at 10:32 AM

Sun melted sand, nothing, how about those solar powered steam tractors!

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Posted by: yo_tyler on December 12, 2007 at 1:10 PM

Wouldn't this make glass?

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Posted by: rmadams on December 12, 2007 at 2:32 PM

Clearly the "inventor" didn't do his math, or at least ever try to boil water with solar power, given the small size of his lenses...

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Posted by: Bob on December 12, 2007 at 6:06 PM

I used to melt pennies with my lenses. You can do it with any fresnel lens from an overhead projector.

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Posted by: Heidi on December 13, 2007 at 10:27 PM

...salvaging salt, iodine, flour, gold etc.
Flour. From sea water. And here I thought that flour came from wheat. Silly me.
It does mention that some kind of tread would make the road "skid proof". I imagine that would last about a year .

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