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Today, we gather to give thanks to the Lord our sheppard, for the gift that was our beloved friend, blue laser diode... Sad but true, I was putting some final touches on the casing and the heat distribution system for my blue 1.25 watt laser build, with the batteries in the damned thing, and I...

It is definitely associated with it. I've tested my blue ~1 watt on lots of materials and you only ever see this effect with materials that will burn. Try it on bare metal or pencil graphite, ceramics, etc, nothing happens except reflected glare. Try it on organic materials like electrical tape...

HAHAHAHA! Pure awesome. :-)

Re: Sunon 20mm X 20mm X 8mm 5V fans and small heatsinks I actually own one of these tiny fans, got it from eBay for experimenting with active cooling in my 445nm build. They're amazing for such a tiny device, put out a fair puff of air and add a distinctively cool high RPM whine to the laser...

Welcome to LPF, both of yas. Nice builds you have there, midias! :-)

I've been noticing this effect with my own 200mW reds for a long time now, and documented it in some of my YouTube videos. I always referred to it as "white flashes due to vaporization" because I didn't really know what else to call it. I've found that with those 200mW reds, it's really just a...

AND I quote: "Most people don't need to own one of these things, they have no practical use whatsoever." Say what? Geez... what... attitude. Seriously though, I can think of half a dozen VERY practical uses for a common laser pointer and I'm not even trying. Anyway, I do agree that this...

Lol, y'all are cracking me up this morning, which is a good thing since I am almost off to work and things are not so lol there lately. Actually, my own first experience with getting it in the eye with a laser pointer (it was someone else's, they thought it was really funny to do it) was...

From the article: "Neither the owners nor the potential victims of such dangerous “toys” can distinguish harmless laser pointers from hazardous ones, and we may see more such eye injuries in the near future." Oh dear lord... Yeah, maybe if the standard test of a new laser pointer is by aiming...

I know it... I have two pair of goggles, one for the reds and one that covers greens and blues... Just sometimes I either am wanting to see visually specific things like was the case with the blue beam fluorescing in the tea, or am... being... lazy. That's not so much the case with the red...

Oh... wait... I sorta somehow forgot that I am incapable of quick comments... lol!

Just a quick comment... As I said before, I have in fact had a few stupid slip ups with my own lasers over the years. My first big whoops was shortly after I did a couple of minor modifications to my Leadlight green pointer and like the moron I so was back then, I took a nice specular hit from...

Thanks, everyone! It's good to be here! :wave: NR

I am *so* in the wrong line of work... NR

Lol... "And wow! You just made a blue laser phaser, but this one can actually inflict pain and blindness and maybe even start a fire! And all for less than a hundred dollars!" NR

What stands out to me is what some of you already cited - "during which the laser beam hit his eyes several times". Ok... We're talking about a beam of light, what, maybe 2mm in diameter, striking a target of what, again just a few mm in diameter. I've had a few stupid slips where I pegged...

:)Hi everyone! Still exploring the forums and finding lots of useful info here - I really should have joined a long time ago. Finally decided to do it, and decided heck if I'm going to join maybe I should actually post! A bit about myself... I saw my first laser when I was in 5th grade in...