Hereâ€™s another fantastic tutorial from Jay, a DIY lasers expert. See all of our DIY Laser Projects. I modified this verynice Stainless Steel flashlight into a 50mW green laser. It is very heavy duty, and super small.Â Below, I will show the modifications that have been made to the host and module. Important: This is a class 3B laser and should be used with care. Proper eye protection for 532nm wavelength recommended. It can instantly damage the eye if it is pointed directly into the eye. Even reflections can cause eye damage.
Here are the pictures that show the modifications:
These are all the basic parts you really need for the project. It’s a super simple setup really, just the laser module, the battery, and housing. That’s it!
The only major modification I had to make is to simply shorten the barrel of the laser.Â A simple mod to get everything to fit in our steel housing.
It is a very heavy and solid design with good heatsinking for the module. This design offers the option of using CR2 primaries, or RCR2 rechargeable batteries. I am using a CR2 primary and am very happy with the results, so I will not need to push the module with the slightly higher voltage that the rechargeable battery has. More Exceptional Laser Projects: