You know, I built two "Kipkay Cool burning laser pointers" (diode without driver) and two "Blu-ray Laser Phasers" (without a gun)
and they all have worked for me extremely well, without problems. I know the diodes are both at risk, and I notice the blu-ray gets a little warm, but I've used the heck out of them for the past 4 months and never had a single problem! I am waiting for one to die. I wouldn't really want to fry the blu-rays since I paid $60 (including shipping) a piece for the ps3 module, but through ebay, I bought two Sony 16X 140mW 650nm diodes for $24. So for $12 a diode, I was fine experimenting with it, to my surprise has worked extremely well so far. The burning capabilities are way stronger then the DX 150mW (melts/engraves black plastic very efficiently, lights matches, and burns dark skin (my black friend claims it stings strong and quick, but since I'm white, I don't feel it!)) ;D)