this is how to upgrade a standard red laser pointer. it takes about five minutes, and if done correctly will burn through paper.
1. unscrew the back and remove the batteries.
2. some models will have a little button you will need to remove. do so.
3. using a small torch, take a peek inside. you should see a tiny little screw.
4. using a jewellers screwdriver, turn it a little counterclockwise.
5. put it back together.
Warning! It is not my responsibility if you get hurt. I take no fault if your laser gets broken. DO NOT turn the screw fully, it will blow the bulb.