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Hello dear friends, I need your help please. Cause of my low budget, I bought the parts of a laser (in 1/3 of the price of a new laser pointer) but now I don't know how to asseble them. I assemble them once and the diode doesn't lights up(I think I broke it), now I bought new parts. Please help...

Hi, this is my first post and what I want is to tell me if you know the difference between the dealextreme's "green lasers" and "true green lasers"... Thanks in advance... (and sorry for my bad english)