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YouTube user magx1’s CO2 laser looks like it’s taking over his living room…

“Look Mom; I Lased my Breath” … Seriously, though – by exhaling into my ‘supply’ balloon, I was able to get pretty good results considering! Unlike a ‘proper’ laser mix of CO2, N2, and He; the ‘breath’ trick appears to have a much narrower pressure range over which lasing will occur. But I like it anyway – it doesn’t get much more DIY than this!

Also see the project’s Flickr set. [Thanks, Bill!]

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


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