Check out my new laser(s). This has got to be the most overkill GB laser ever built. Peltier cooling, custom machined aluminum and copper heat sinks, fits entirely inside flashlight without removing window. I'm running 160ma through the diode and it stays cool to the touch after minutes of running. This is a pic of the copper heat sink press fit to the laser module, the peltier, and the aluminum heat sink. The hot side of the peltier is glued with thermal adhesive to the aluminum heat sink and the copper heat sink is glued to the cold side of the peltier.