Dec 25, 2014 #1 B brownb56 New member Dec 25, 2014 #1 Joined Dec 25, 2014 Messages 29 Likes 1 Points 3 Been interested in high powered lasers. And always been a bit of a tinker. Looking forward to learning how to make one of my own. Have a stream light host that uses two cr123a batteries. Curious to see what I can come up with in the 200mw range.