FYI, any laser with more than 500mw or so can cause instant, permanent blindness even looking at a diffuse reflection. There's all those sketchy laser pointers, and then there's all those sketchy DIY laser cutters/engravers you'll see out there. Which don't include any form of laser safety enclosure or ventilation options or even tell you that you need one. You REALLY don't want to run a laser cutter with no fume extraction, especially not on acrylic or other materials that emit nasty fumes when burned. You do NOT forget the smell of burning acrylic. Ask me how I know 🤢. Maker's Muse already went into a lot more detail here, kzfaq.info/get/bejne/Y5-YfLuFnaqxhYk.html If you're thinking at all about buying a laser cutter, I highly recommend you watch his video first. Even worse than all that are those quack "medical" lasers that StyroPyro covered in this video. kzfaq.info/get/bejne/esiqlax40La7XaM.html TL:DR, do your homework about laser safety, going blind instantly is no joke.

@@themagitechie9955 The optional laser head for my benchtop CNC engraver helpfully came with "safety" glasses... that pass blue light, and it's a blue laser. Should I ever use the thing, I'll be wearing real anti-blue laser safety goggles. And maybe even knock together an opaque, or blue-blocking, enclosure, in case I'm not the only lifeform present when it's operating. (Opaque enclosure plus cheap little USB camera on the inside might be best. USB cameras are expendable nowadays.)

@@ericwilner1403 I would highly recommend that second option. Try to build it reasonably airtight so an exhaust blower can maintain enough negative pressure to prevent smoke and fumes from entering the room. Trust me, you don't want to smell burning acrylic, that stuff is quite foul and rather toxic. If you can, make some kind of interlock that cuts power to the laser when the door is open.

@@themagitechie9955 Another reason not to try using it just now... current workspace is in the garage, and dumping fumes overboard is not really practical. I hope to have the detached workshop set up by next Summer, and the plan for that includes a fume ejector of some sort.

It might be worth to add another word of warning, and link this video: kzfaq.info/get/bejne/b9p_lriqxtHPYIU.html Short summary, under cold conditions green lasers will have their wavelength shifted to the infrared. That makes them invisible, but not any less dangerous to eyes. If there's no infrared filter fitted, which I assume won't be on those incredible cheap units, it's actually freaking dangerous to eyes. As it's invisible, there's no lid closing reflex and the uneducated isn't aware of what's happening.

Exactly this. High powered lasers are friggen awesome. But let's be real about what we're selling for everyone's benefit. Laser hobbyists included

Its fine if you're looking for indoor outdoor teaching camping power point though

@@boulderdashcci That's very true

i long for the good old days when lasers overstated their output instead of lying

Pretty sure if you're in the market and spending 50 dollars on a laser, you know what you're getting.

My old green lazer I bought 15 years ago does exactly this.

mate the sun puts out wayy more IR light than these ir diods. U shouldnt look directly into them but they're pretty much harmless tbh

Came here to say exactly this. Lasers are fun, and useful, but knowing what spectra you're blasting around, and at what strength, is super important.

And even when warm, they can put out many times the power of infrared than visible green. I don't trust green lasers without testing (using a phone camera that can pick up infrared, and a prism/diffraction grating). I actually bought some little green-looking IR filters a while back to glue on to cheap green lasers.

​@@anapple998 The sun also shines visible light that the eye react to by shrinking the pupil.

Such a true statement! Was outside working weeks back, and tree rat was taunting my Morris from a low limb. Went and grabbed Gamo silent cat and a minute later, Morris was treated to a warm, "all natural" and "renewable food source", fresh lunch.

we used to use a laser pointers with our dog and she would go absolutely nuts over it, because we would always hide a treat somewhere and when the chase was over it always lead to the treat

I place treats around corners and under the edge of blankets before breaking out the laser for the grand-kitty. Then occasionally while playing, I will point it to that spot and let him "catch" his reward.

@@marvinheemeyer9768 - great idea for these hopped up lasers. Tree rat roaster!!! Teach them not to use your yard and trees! You could even rig an aiming device with scope and laser mounted to a board. But I wouldn't think of actually doing this to the sweet rats that make my yard all lumpy, chew on my house and drop limbs in my yard.

@@PayNoTaxes0GetNoVote -passive- active aggressive 🤣🤣🤣 Though hunting squirrels with a high power laser sounds like a cool idea

Yeah those 9999mAh 18650s and 20,000lm LEDs ain't.

@@nicholasvinen Even had AA batteries in the past that felt awfully light. They save money by putting less battery stuff in a battery.

@@graealex you get what you pay for, theres never been freebies in humankinds history and it aint starting with made in china products, im just sorry the west is becoming so poor you have to buy made in china

Sorry chinese manufacturers r making u buy their crap

Let's just think the Chinese are selling eye safety here and we're back to business as usual.

can i use them to play CDs though? or burn CDs, perhaps literally? :) seriuosly though, this "Infrared bounces off of different things than green light, so the two beams can also end up misaligned with one another, meaning that you can have a visible beam that might even be at a safe intensity, but also an invisible blinding laser beam just bouncing off in some other " that's the craziest concern alright besides the reflective properties of certain colours and materials and how they may still bounce ir to different degrees without you really being able to see any of that behaviour IR is a lower frequency too and therefor will travel a greater distance for the same energy, and therefor inherently has more potential to make more bounces too, assuming the amplitude is the same (amplitude as a function of, distance * lens angle:wavelength ratio) easy proof: the old squiggle in the rope, get 2 ropes of a meter, then deform one to make 4 sine waves exactly 10 centimeters from the bottom to the top now do the same with the other but with 6 waves instead... a lot of horizontal length is now lost to packing density vertically, this is why lower frequencies travel farther for the same beam width and because of that frequency index of refraction comes into play too when used on water or glass or even thicker diffuse solid i mean, diffusion like using a sheet of paper to light up a room with a small flashligh, really is just photons scattering in random erratic directions through the material and spreading the light across a wider surface as a result of those bounces, i guess you can throw it at a prism and perhaps see a bit of the visible red still get seperated before it goes into ir, also, using the cam on your phone, it usually does have IR filters, but still sees more red than most human eyes do, you can strip the IR filters from webcams quite easily too and use them as ghetto heatcams

What about a cheap red laser?

My cats and dogs don't stress over this.

@@baxs5076 didn't know u can read their minds

@@kathaai It’s not difficult to read their body language. Worrying about their “stress” is idiotic anthropomorphizing them.

@@baxs5076 Stress is a universal trait. It's not limited to humans.

@@baxs5076 dude are you playing dumb or are you actually just dense?? If you want to talk about body language, you can physically SEE the signs of stress in animals. Pacing, raised back and whiskers on end, panting, low or lashing tail, whining, hiding and irrational swiping. And don't tell me you've never smelled the sweaty scent coming off of a dog with bad separation anxiety. I've been working in shelters for about 3 years now, animals absolutely do get stress, it's caused by hormones in the body that we mammals all share like Cortisol, not 'anthropomorphising' them. High prey-drive predators like cats especially get paranoid and frustrated. It's nice that your pets don't care, good for them to be less stressed out, but many others do.

Exactly why the laws were put in place! Of course idiots will break the law and take the consequences!

@@glasslinger If they sold it as a 5mw eye safe laser it's the seller who broke the law. @alexwang007 you may have grounds for a civil suit if the actual (IR) power was much more than 5mw

@@glasslinger ?

@@glasslingerr u dum?

I think you may have a point.

YES I got IRON JIA'S Tactical Combo Green Laser Sight from amazon and LOVE it great setup and seem like a strong laser.

Yes, I think it was hoplopfheil that recently reviewed some airsoft IR laser illuminators because they’re more powerful than what’s available on the civilian market from reputable manufacturers.

Yes Got a laser for my crossbow. The laser itself is a fucking weapon. I doubt it'd pop a balloon, but it's powerful enough to light an entire room up with a green glow.

@@daviddavidson2357 >fucking weapon >can’t pop balloon Typical crossbow owner

Ohai Maya!!

little known fact: cat's fav toy is an empty toilet paper roll, second, a 6 foot section of floor protection paper (light weight stuff) silly people.

If the laser is strong enough to set fire to various objects then looking at the spot on the wall without safety goggles will make you blind instantly and no amount of eye surgery will be able to help you, maybe an eye transplant.

I have to argue with the feathers, cause my cat made multiple carnages with both feathers from toys and from birds. Always a pleasure to clean a bloodbath in the tub at 6 AM

My sister's cat is a crackhead for the lazer pointer.

I’ve always wondered the true strength of hydraulic winches. Doesn’t make much sense the army has a 12k winch in a 17000lb Lmtv

@@snakehead5444 Snatch blocks to double or tripple the pulling power.

@@snakehead5444 yes it does. You don't need that much force to get a vehicle to gain some traction. Imagine the force of 3 people pushing the back of a stuck vehicle in mud. 500 pounds would do the job on a sedan, maybe 750 if you want wiggle room.

It would be awesome to see winches tested to failure for both purchase and safety reasons. I for one would like to know wether a winch will fail at the cable, fittings, drum, motor, or base.

This what Project Farm is for. I personally prefer degrees of separation between the two (PF and TTC; it is called TORQUE Test Channel, after all).

Yea good goggles arent cheap, and then you need 3 different ones for red, green and blue lasers (I believe?). And then when youre playing with them you need to make sure the laser cant reflect outside and that nobody can come into the room. Not worth all the hassle and expenses. Just watch styropyro instead

how is it possible to get eye damage from looking at a spot on the wall? just from the reflection?

@@Platzhalterxy yes it is just from the reflection, the reason why lasers are so dangerous even though their output power may seem pathetic compared to most other things is because the power density is off the charts, it is not that hard to make lasers with a power density greater than that inside of a nuclear reactor (at least compared to what you would think it would take to get something with that kind of power density) a 500 MW laser does not come anywhere near that kind of power but you don't need anywhere near that kind of power to cause significant problems. And then when you consider the fact that your retina is easily the most fragile part of your entire body (I don't know what the melting point is exactly but I know it's not very high) causing permanent blindness with lasers is actually quite easy once you start getting above like 50 ml power or so

ml is milliliters. Did you mean mw?

@@charlesdada6434 Glad someone else caught that.

@@charlesdada6434 I was tired when I wrote this comment okay cut me some slack here

I'm the same way. I do enjoy some of the more ridiculous ones (for a time), but I also tire of my searches getting bloated by crap that isn't what I'm looking for.

i just look for the best (real) reviews with the lowest price... i've sold stuff on ebay a long time ago for a living so i understand that cramming as many key words in the title helps people find your listing in the sea of junk for sale so they are just trying to make as much money as possible and be profitable... capitalism at it's finest, brought to you by a communist country 😂

Yeah I instantly look for a different listing. Everytime.

@@Hard_Right Except all the junk also has every possible word crammed into the title so how is it helping you stand out from the crowd of junk?

Smart double-entendre inside joke tongue-in-cheek entertaining comment meme gag.

Uh ... 10kW? ... What is the PPE for that? A 4 inch thick steel plate?

@@alexermergerd Its 10kW for thousandths of a second, its not a constant power laser. Any old steel plate will do ;)

@@alexermergerd Strictly speaking, I 'should' be operating my rig remotely. I typically work in the ~1000nm wavelength so it's essentially a beam of heat. Unfortunately, stray reflections are wiley. Glasses under a face shield, and typical flash protection for incidental UV radiation.

@@jakegarrett8109 Indeed. I, however, have been told by our engineer that our setup has a potential +300 W constant. I'm certain that the cooling system would not last but a few minutes. I typically run a pulse width of 5 - 7 ms to manage chamber heat but I could max out at 50 ms. Colleagues run "big boy" LASER rigs for heavy industry. How does one deposit Tungsten Carbide for wear build-up onto CrMo shaft stock for a massive mining machine? Constant output LASERs the size of a school bus and a lot angry pixies.

@@ALAPINO You'd probably be fine for a while unless you just stood there for a minute in direct path, wouldn't recommend standing in front of any powerful laser that long, haha! They sell some really cheap arrays that are over 100w continuous, which would be cool as a laser weapon (I want to convert my vintage Star Wars blaster into a real one, with laser safety lenses inside its fake scope so its always with the blaster). Plus if I get a metal 3d printer they use fiber lasers that are at or above 200w continuous and capable of fusing stainless steel and titanium for printing.

Have two cats. Yeah this is totally true. My cats go crazy when the pointer comes out. And then get depressed that they couldn’t “hunt” the pointer and actually catch it. I don’t do that any more. It’s too much of an emotional up and down for them.

My friends dog went mad from chasing a laser pointer, that little red dot drove it insane and he had so shoot the dog in the end

My family friend had a chocolate lab who would seriously freak out about laser pointers. But I found a way to play with him with them that would leave him satisfied. When he caught up with it, he would try to lick it up. And when I turned it off right then he'd be satisfied that he "ate" it. If I didn't he'd start going a bit crazy.

@@FerralVideo lol typical lab. Have a problem? Solution: eat it

@@FerralVideo I did that for my cats too, when they put the paw down on it I'd turn it off till they lifted so it would run away, then when they were near done they'd go in for a bite and "eat" it and then it would get its petting. First time it looked terrified thinking it actually ate this mysterious laser and tried spitting it out, haha! Mine were smart enough to know it was a toy, they figured out me holding a pen and movement corelating pretty fast, but they enjoyed it and for my older cat who didn't want to go outside in the cold and wasn't getting much exercise the toy kept it happy and in good shape. Also bonus, they loved it and got super tunnel focused on it, so you could play for a bit, then target a parent (or sibling if you had one), and they'd go flying across the room with claws out and stick to their shirt or to the couch or whatever before realizing they just leaped onto a person, haha! Who needs heat seeking when you got laser guided kitties!

"I don't even wanna risk owning something that can cause permanent damage to me or anyone else". Do you own a car?

Well, you've gotta do some research first, wearing proper safety goggles, using it when nobodys around including animals etc. I own lasers 20-500 times stronger than these in this video, and I have never ignored any safety precaution. And here I am enjoying the hobby I started over a decade ago.

Wut?

Why would Amazon have any quality control over products other people make? The manufacturers do QC, not retailers.

@@theKashConnoisseur I meant they don't vet anything. People shouldn't just be able to straight up lie about what they are selling though Amazon.

@@Dharleth82 How would you propose that Amazon go about testing the truthfulness of the claims on every single product being sold by every single seller? Honestly, I'd love to hear ideas that wouldn't cost the company (and in turn the Amazon users) millions per year. Importantly, no claims of laser power seem to have been made at all on these products, meaning there's nothing to disprove by showing that they are overpowered. Is spamming keywords in the title of your product lying, in a legal sense? I don't think so. Technically, you can use these for the dog, cat, classroom, teaching, hunting, etc. Yes, you'll possibly blind everyone involved, but these lasers still function for all those purposes while you and your subjects retain some amount of vision. There's a reason why "caveat emptor" is apart of legal doctrine. Buyer Beware, it's up to the buyer to determine the quality of the product by doing their own research. Such as watching videos like this which independently test product claims!

Disturbing? You must be easily disturbed. I Havern't read of a single aircraft falling out of the sky because of it. Overhyped, overblown bullshit.

Yeah, I agree. Pointing a laser at any aircraft is a federal crime and can get you up to 5 years in prison, and $10,000+ in fines from the FAA. So to anyone reading this... don't get any bright ideas. You could literally blind/dazzle a pilot with who-knows-how-many people onboard their aircraft and would all be at risk and potentially anyone below them if they were to crash

@@Perkeletricksterservantofrher explain.

The heck r u saying

Do not look directly into laser with remaining good eye 👁

shady shades 😎

@@SidShakal, "our conclusion is that eight out of ten shades were not shady enough, or were too shady, depending on how you want to put it".

He's onto us

@@TorqueTestChannel Turns out he's a cat. Nags the cat, to be precise. So until he learns how to read a credit card (not just browse) you're safe.

Came here to say this. 0.05W is 50 mW. 0.005W is 5mW.

Those Things are no joke. They are basicly cheaper and simpler versions of Lasers used for stage and lighting applications. Most of the time they are class 3 a/b Lasers so they pack quiet a punch. I got permanent eye damage from playing around with them when I got my first Stage Laser.

Remember lawn darts?

@@heypaul7646 I loved that game!! Right up until my parents threw it away lol.

I don't know, they could probably cram some lead and asbestos in there somehow. Eye danger is just one type of danger 😁

Unless you get a finglonger

Eye-opening... or eye closing if you're not careful

Have fun and do not fry the cat.

Probably because they're in spec at 5 milliwatts.

@MrComfyFrog. a circular spinning motion not directly at the aircraft to get their attention i guess. If someone sees it, they may report it. It would be ideal if people are already looking for you, by making some sort of distress call.

@@mrcomfyfrog.1519 I have a feeling that's an acceptable situation.

@MrComfyFrog. I think they might make an exception one time if your life is in danger, as for a lot of things.

@@SRQmoviemakeri doubt it. Risk an entire jet because 1 person is lost?

@ATadBitNefarious how could they possibly track down the person from miles away just off a laser they saw for a split second lol

project farm has some good content like that if you need to find a good extractor

anyone interested in lasering should def checkout styropyro's videos. he goes very in depth as to why these lasers can be very dangerous, the safety equipment needed, proper handling, etc.

Where can i buy a trustworthy laser?

@@dabeaniebeaner Unfortunately I don't know. The vast majority of all laser pointers are made in China, and its next to impossible to know which are being honest about their output power unless you go the route of testing them yourself. But as long as you're careful with the laser and only use it outside, it shouldn't matter too much if manufacturers are lying about their power.

@@matrix3509 would it be better if i ordered a laser pointer that was in this video since it has already been tested? I was thinking of ordering the 2nd laser in the video Edit: the $18 red laser pointer, 26x, 128mw

Good ideas coming in. They should compare laser power meters and safety goggles.

Lasers used in old barcode scanners, modern designs just use red LED lighting and an image sensor, are class 1 and therefore eye safe, there can't be any cumulative damage. Same for show lasers, while they might easily fall into class 4 and are extremely dangerous on their own, laser show operators must ensure that exposure of the general public stays within safe limits. Now sadly you shouldn't really trust laser show operators, since some of them might simply operate illegally or are stupid. For a new year party, my town set up a laser show on the main town square. I had a show laser set up and pointing right into my living room window. Metal window blinds really can save you from dangers you never could've imagined...

Bezackly. Specifically, the green lasers are almost always frequency-doubled diode-pumped Nd:YAG lasers (DPSS: diode-pumped solid state, plus the doubler), so there are two strong IR wavelengths present in addition to the visible green. Cheap lasers don't generally include a filter to block the IR emissions, so the apparent brightness of the beam isn't a good indication of the total power. I went looking for a cat toy built around a direct-green laser (no IR involved); failing to find one, I ordered a batch of direct-green modules, which should be turning up in a week or so. If those seem safe, I'll build a pointer around one for safe cat-teasage. (Have to dig out the ol' power meter from storage.)

isn't there something about beam width too? I seem to remember Chauvet or ADJ or one of those brands coming out with higher mw "fat" lasers to bypass the variance requirements for live production.

@@ericwilner1403 Plus, the filters, if present, are less efficient at colder temperatures. So, hopefully, you're playing with Fluffy inside and not out in the snow...

@@jdev0203 Ah. I knew the doublers get out of alignment if the temperature isn't Just So, leading to the green fading away (and presumably the IR continuing to come out at full blast, despite the appearance that nothing's happening). Hadn't realized there was also an issue with the filters.

@@ericwilner1403 RIght right! That's what I meant, the doubler, not the filter. My mistake.

And you could unwittingly flash a pilot. Happens fairly often.

@@chrisprimavera7607 I don’t think anyone could unwillingly do that. Aiming at a moving target takes effort.

@@billthepainter5106 kzfaq.info/get/bejne/f9FjgddnsdevZH0.html

@@billthepainter5106 you absolutely can. it's the same idea as shooting a gun upward. You dont know where it's gonna go or what's out there so just don't do it. green lasers are super dangerous.

Thanks for the rave review! I will definitely go buy that illegal wattage laser pointer that can burn my retinas now 😄

@MrComfyFrog. no, this is a truth in advertising and safety issue. It's like selling someone what is supposed to be dilute acid but in reality it's concentrated. Do we now have to test everything assuming we're not being told the truth? And this has zero to do with liberty. You can go buy high power lasers. No one is stopping you.

@MrComfyFrog. You need to watch the video again. TTC clearly discusses the problem of the laser ppointers power and that you can go buy powerful lasers which are "intended" to be powerful.

@MrComfyFrog. what a idiotic comment

Safe to assume you meant 10-600nm? ☺️ Although, fittingly, 10600nm DOES sound _very_ eBay/Amazon/AliExpress! hahaha

CO2 laser. 10.6um which is 10,600nm.

@@DrFiero Well, shit! Even as a sciencey type guy, I thought they capped out at 1000! I am humbled _(but not ashamed!)_ by my sheer wrongness 😅 Thanks! _[edit: oh, and as a Firechicken 🔥🐓 owner, I definitely have a soft spot for the Fieros; the Formulas, specifically, since that's what my Firebirds have been ❤️🤘]_

...one simple request!!

it'll get so spread out after a couple miles that it won't be an issue, sure it might be visible but the spot size is governed by the laws of physics and gaussian beam behavior so if it had the power to get 6 miles up the spot size would be larger than the whole plane

I bought the same green one on amazon... wow wasn’t expecting to literally get burnt if you put your hand in front of it.

If you can see the beam indoors with lights on, then it's probably above 5mw. Seeing the beam means that you can move it back and forth and still see it, rather than being able to faintly see a stationary beam while you're looking directly down it. You'll be able to just make out a 5mw beam with lights on, and you'll certainly see the beam without lights. It won't be bright, but it will be visible. I've never seen a 5mw pointer with an 18650 battery though, that would essentially last several weeks powered on.

Do you live in a clean room? No residential house has "no measurable particulates in the air". People are always shedding cells. We are walking dust clouds.

@@jssamp4442 well, no measurable counts on my particulate sensor. There's still obviously particulates since I can see the beam, and since allergies still happen.

He probably wasn't exaggerating. When I first became familiar with them in the 90s, they were considered a pretty high tech, luxury "business" item (a "pointer" to easily direct attention during a presentation.) I do remember them being _quite_ expensive initially, though the prices dropped fairly quickly.

The Chinese give you 1 to 5 % what you wanted and paid for and 95 to 99 % something else.

This would be interesting to see. I've heard few times guys feeling actual pain accidentally looking into line lasers in jobsites. I've hit my eyes few times accidentally too and for sure it isn't pleasant even with the common "reds". I wonder how some of the green ones are. Never saw one at work (yet).

My guess would be that they are very weak, for one thing they are big companies that can't get away with ignoring the law or misleading customers without lawsuits. Additionally I wouldn't think it would take a very powerful laser to do the job they intend, but maybe I'm wrong.

@@BriBCG actually they need to be fairly powerful cause laser lines disappear easily in lit conditions. I have the older red line laser and it's getting pretty hard to work with only about 10m distance in brightly lit areas.

Yep

Legit helpful criticism to the creator on a KZfaq video without using a soup nazi tone.... *I have discovered a unicorn*

She won't stand a very good chance of hitting the attacker in the eyes. Get pepper spray instead. The attacker would have to stand perfectly still, with their eyes open, for 3-4 sec. The lazer is not the answer.

@@lamarw7757 You've made a valid point, but it is moot now because the laser I purchased did not live up to its hype and wouldn't even burn paper, so it sits on our coffee table unused.

Ur just idiots probably.