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I'm going to order that one. Do I need a heatsink for it? if so will this one work? (It wont let me post a link yet, I'm a newb here.) Search Amazon: Cooling Heatsink/Heat Sink Holder for 12mm Laser Diode Module with Support/Mount The more I learn about lasers the more I have to learn... down...

I was thinking i would stay with 3-5mW if its bright enough. I just need to find one that has a long duty cycle since it'll be on for 20-30 min continuously. FYI: I assume the 633 638 665 in your signature are all different shades of red... I can't see any discernable difference.

It seems like I remember seeing an advert years ago about computer monitors having a crosshair overlay, I assumed it was a fad that faded. I wonder if my TV has it... Would you care to give me an idea of what to search to find a third party overlay? Would it be downloaded to the TV or on my PS4?

Thanks for the info. I don't have any interest in a high powered laser as it will be in my house with a toddler and wife. I just want it for a little contrast on the screen. I didn't realize it could reflect from the screen, when the family dollar brand lasers got the lease bit weak it was...

New guy here, I'm looking for a laser to point on my TV when I'm playing COD. The reason for this is the crosshair is permanent but disappears when I run and is hard to see against lighter color surfaces. I'm mildly colorblind and struggle with colors that don't contrast well. I had the idea...