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Aren't mirrors are used to reflect all laser wavelengths? Mirrors are made of metal, metal reflects. Even if the metal somehow absorbed 100% of the laser, the glow of the metal alone could damage your vision, what do you think welding goggles are for? With a laser that strong, even a...

Hahah. Who needs safety glasses when you're already blind right? Huh? Are you saying it's fine not to wear safety glasses being 2 feet away from a laser hitting shiny metal?

The documentary discusses the insane security in China. The scene shows a high power laser metal engraver engraving someones ID number onto the blade cause it can be a dangerous weapon. Speaking of dangerous, no one is wearing safety glass while they are firing high powered lasers at...

Really interesting, thanks for the response!

Forgive my ignorance if I sound like a complete moron on this subject. But I was looking into different ways of combining lasers, and was thinking about using the knife edge method, when I thought of a potentially much better way, which I've never found any info on. What if you shine each...

I suggested it solely on the fact that it's a really great deal. I bought it, and I can confirm that it's a beast. I will say that it is unlikely it is reaching 8 watts though. 5-7 watts easily though when comparing to other lasers in the same ball park. Made a laser gun out of it. Made a...

The best watt per dollar I've found is this unit: https://www.ebay.com/itm/PWM-Blue-Laser-Engraving-Module-Focusable-450nm-8W-High-Power-Etcher-Laser/264137784877?epid=28031091452&hash=item3d7fd6be2d:g:ucYAAOSwaJ9cPIRy The divergence is not very good on this one though. I'm sure a beam...

Oh yeah of course. Any time I'm shinning that laser at anything I wear eye protection.

I just upgraded to Samsung S10+. It was my parting gift to apple. :)

Yeah, but the sounds irritated me to the core haha. I actually only removed the fan in hopes I might get a little more power out of it. Not sure it added much if any, I might put the fan back on. Thing is though, the laser being on a gun isn't on for large periods of time often.

Hey everyone. So This is my first actual DIY laser gun or pointer. It's a little sketchy looking but it works, and it's great value. Made a video of it killing an Iphone 6. Laser module link(Excellent deal)...

I'm probably not in much of a place to debate here, but my other laser pointers are also high power blue diodes, same wavelength. I took the lens off of both my old 5 watt laser pointer and the new module. The raw diode flash light on the wall at the same distance, was actually smaller on the...

I'm just using this to make a laser pistol for fun. Watt per dollar is all I'm after. :)

Even so, laser pointers in this power range are usually $200-$500. $76 doesn't set you back very far. I think it's perfectly fine for a hobbyist looking to make something out of it. The fan cooling will extend it's life I'm sure, I had it on for 3-4 minutes straight and it was barely warm to...

So I came across a "8 watt laser module", with a power supply, adapter and heat sync with fan, that was priced at only $76. Immediately I felt skeptical, since the cheapest I've been able to find a just raw 7 watt blue diode is around $80, and it was a Chinese seller. But since there were some...

Thanks for the DTR reference. Seems like some good pricing on parts. Love that 7 watt diode. Anyone on here ever make an array of those 7 watt diodes joining with knife edge?

Um, okay..?

They are both very large housings, but do not specify the output likely because they don't want to get busted. Fairly reasonable prices if they are very high watt. I haven't been able to find these lasers anywhere else, and I haven't seen any videos on either. Large silver...

Lol um... Satan? Is that you?

I don't want to live on this planet anymore..