In this instuctable I'll show you how to make a powerful handheld laser. Almost all parts are easy to find online. There are only one part that must be produced by a lathe, everything else can be made with ease.
Warning: These lasers are powerful enough to burn your skin. In other words, they are powerful enough to take out an eye instantly. Always use protective goggles.
Step 1: Acquire parts
We need a shell for the laser with a lot of power. I've seen flashlights been used around the net. The one I uses here I bought from dealextreme in china. The laser diode can be found on e-bay, here I made two pointers. One with a 445nm blue and one 405nm ultra violet. As the driver I intend to use can handle a wide variety of diodes you can choose the one you like. The laser diode needs to be mounted and have a lens. The easy way is to just buy a mount with lens.