After viewing styros video I would like to create something similar (no it hasn't got to have the same wattage). I just want to know how he was able to create a coherent laser beam using the DLP projector diodes. What are the best diodes? Is there a large difference in brand? I am very curious about this, because it sounds like making a relatively cheap and powerful laser, which would be a blast. Also how do you determine the wattage of the coherent laser from the wattage of the DLP projectors? I understand how the knife edger works, but am mostly curious about the workings of the projector. Thanks for any response!