This is the step where I tell you to be safe. Lasers are dangerous and if you aren't aware they can cause damage to your vision if used improperly. So please don't look at the laser. You've been warned.
Second, the power supply can be dangerous if you use it without the laser connected. Make sure you are careful with the power, you may get hurt. Or shocked. Anyway, pay attention.
If you're going to make one of these you'll need these tools to begin:
- Soldering Iron
- Damp Sponge
- Safety glasses
- Needle nose pliers
- Wire Cutters
If you want to learn more about lasers then I'd check out Wikipedia: http://en.wikipedia.org/wiki/Laser
Attached are the original instructions and a scan of the educational pamphlet I filled out as a kid. Even though Elenco discontinued this kit in the late 90s I still want to point out that this is their kit and their material. I've included it here in good faith and as documentation for others that may find their own kit hiding after 20 years and want to build it:) Don't be a jerk and try to pass it off as your own stuff. That's my disclaimer.