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A comment on 3D Print with Sand (2011) [video]. Parent comment
So a square meter lens for the sun will give you more than ten times the power professional SLS printers are using.
That is indeed a lot.
Edit: here a nice answer about the heat generated: http://physics.stackexchange.com/a/103039
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So a square meter lens for the sun will give you more than ten times the power professional SLS printers are using.
That is indeed a lot.
Edit: here a nice answer about the heat generated: http://physics.stackexchange.com/a/103039