A 5 mw green laser is commonly found in inexpensive laser pointers. The beam is very weak, but it is easily seen because the human eye is sensitive to green light. Modifying a 5 mw green laser makes it similar to laser pointers costing hundreds of dollars, and turns the beam into a "burning" laser with a much greater intensity. The modification can be done by anyone who is willing to follow a few exact steps, and can be completed within a half hour.
- Skill level:
- Moderately Easy
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Things you need
- 5 mw green laser pen
- Jeweller screwdriver
- Soldering iron
- Bonding glue
Put the newspaper down on a work surface.
Pick up the 5 mw green laser pen and unscrew the battery cap. Remove the batteries and put them and the battery cap aside.
Hold the back of the laser pen with your left hand and the front of the laser pen with your right hand. Twist the laser pen between your hands until the glue holding the two halves of the laser pen comes loose.
Pull the right side of the laser pen off. Put the left side of the laser pen with the exposed laser mechanism down on the newspaper.
Turn the screw on the laser mechanism fully to the right using the jeweller screwdriver.
Heat up the soldering iron. Touch the tip of the soldering iron to the circuit board that is above the screw on the laser mechanism. Hold the tip of the soldering iron to the circuit board for a few seconds. Unplug and put the soldering iron away.
Apply some bonding glue to the end of the right half of the 5 mw laser pen. Reattach the right half of the 5 mw laser pen to the left half of the 5 mw laser pen. Hold the two halves together until the bonding glue sets.
Insert the batteries into the 5 mw laser pen and screw the battery cap back on.
Press the button on the 5 mw laser pen to see how much more powerful the laser light now is.
Tips and warnings
- Make sure the soldering iron is not too hot when it is touched to the circuit board as the heat could damage the other nearby components.
- The beam of the modified laser can damage the eye if pointed into it from a very short distance.
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