This is something ground-breaking to your kids playing.Â As a kid, did you ever wonder how to make your own shooting gun has actual laser beam?
This is another DIY method on how to assemble one on your own, a real, high-powered blue laser into a plastic Star Trek Phaser.
There are two ways you can get the blue laser youâ€™ll need for your phaserâ€”you can buy one on the Internet for about $30, or you can salvage one from an old Blu-ray or HD DVD player. If you opt for the scavenged laser, be forewarned: Youâ€™ll have to build your own driver circuit, a task thatâ€™s pretty easy by circuit-building standards, but not for someone who doesnâ€™t know his way around a soldering iron.
[ Source ]