Have seen a number of lasers from years back, the simple red ones and never got all that into it. Bought a package of 5mw lasers a weeks back off of amazon and been having so much fun with them deceided to look into lasers a bit more. I just needed some lasers you could see the beam. Interested in learning more about them building a bit of a collection and maybe building a few of my own. I live just outside of pittsburgh and am ussually pretty busy with work, and raising kids.