Problems with home-made laser burner

Hi everyone!
I'm building a laser burner, but I can't make it work.
I followed a Youtube tutorial, and this is the circuit I made to give power to the laser:
http://i.ytimg.com/vi/-O9H90kSbk4/maxresdefault.jpg
PD: I checked the output with a voltimeter/amperimeter and all was right, 3v and 0-250mAh with the variable resitor.
I used lots of lasers of DVD and CD burners, but all of them did not work, they only give a poor brighteness little red light.
These are some images of these DVD/CD writers:
http://es.tinypic.com/r/v8psw4/8
http://es.tinypic.com/r/1zwyw01/8
http://es.tinypic.com/r/9anz9l/8
Hope someone can help me, and sorry for my bad english.

Some of those harvested diodes are not very bright anyways.
See if this link helps with your build = http://laserpointerforums.com/f51/i-want-build-laser-thread-52972.html

Maaaaaan that's a really confusing circuit. As LC said, just check that thread.
Also, don't use CD laser diodes because they're infrared, and you could blind yourself without knowing that the laser is even working

Check the cd-driver again you may have pulled the IR-Laser not the Red Laser 650nm

what safety glasses are you using?