cbrian4 said:Dude thats the best divergence i have ever heard of in my life! 0.49999995833333954
I looked up average specs on lasers, and must be WAYY off on the 2km size, but I still see a spot at night on a white house. The 3mm at 4m is approximate, but I bet darn close..
Unfortunately this seems to be the norm . No wonder they lose burning power at short distances.
As far as the brass tube idea goes, that's a bit out of my leage for what i have the material/tools to build. Would carefully painting the inside of the barrel black help? Or maybe sticking something over the aperture pierced to JUST the size of the beam?