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US: Man builds a replica Star Trek phaser
This is not the first time such a project has been done. In 2007, Kip Kedersha (“Kipkay”) posted a YouTube video showing how he bought a surplus Playstation 3 laser diode for $45 and a Star Trek toy for $30, in order to make a laser-emitting phaser.
A Huffington Post story has the 2012 video, as well as links to earlier videos and detailed build instructions.
From Reddit via the Huffington Post