SainSmart 2.5W 445n Blue Laser Module Kit
SainSmart 2.5W 445n Blue Laser Module Kit
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Product Description
Able to engrave wood, paper, plastic, leather, and more, the SainSmart 2.5W 445n blue laser module kit will let personalize your DIY projects. Featuring an adjustable laser beam that puts out 2.5-watts of power, the module has an intelligent feedback control circuit and an external ACC constant current driving mode to improve the reliability and reduce power consumption Read More

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Moleman
14
Apr 30, 2019
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You think this could cut heavy paper or pattern paper?
Apr 30, 2019
OrangeShadow
115
May 1, 2019
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If it's real 2.5 W then I think it should definitely cut heavy paper and/or carton from what I've seen on YouTube. What power was yours? The Chinese ones are often rated as peak output with sustained output being only half... Tricks.
May 1, 2019
Benni00x
0
May 1, 2019
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The Power of mine was 1.5 W.
May 1, 2019
theonug
257
Mar 11, 2019
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So how would I build a, strictly for educational purposes of course, cell phone blocker. Very aware of the laws and consequences involved but I would like one none the less. Anyone know what components I would start to collect? Thanks, theo!
Mar 11, 2019
OrangeShadow
115
Jul 5, 2019
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So you knowingly posted in a completely unrelated discussion and then complained that I didn't help you? Smh. Anyway, perhaps I didn't point out the correct place to post this because I have no idea? I just politely pointed out that you're unlikely get help here and you act all hurt or something... Unnecessary.
Jul 5, 2019
theonug
257
Jul 8, 2019
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I did not know it was the wrong place, if I did I wouldn't have posted here.
Jul 8, 2019
MeanEYE
389
Mar 8, 2019
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Okay, few things of warning. First of all, don't fuck around with this if you decide to get it. This is not tee hee look how far it goes kind of laser. This laser has enough power to cut wood, leather, plastic, etc. Pointing it at anyone or anything that is not carefully planned is just asking for trouble. You point this at anything vaguely reflective and it can cause damage. It doesn't even have to hit you directly. Secondly, those glasses are garbage. Don't rely on them. Nothing plastic will save you from lasers. It might give you some chance to react before causing permanent damage to your eyesight but I wouldn't rely on it at this power. https://www.youtube.com/watch?v=qyOHq7yP63w This is my 3D printer equipped with 0.25W laser doing some engraving. Even that weak laser is strong enough to cut paper, and engrave things and make the whole room glow red.
Mar 8, 2019
alysdexia
34
May 6, 2019
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I could do the same with a plastic Fresnel pocket magnifier.
May 6, 2019
brainwave
598
Mar 8, 2019
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By selling this to general public Massdrop is opening itself to lawsuits. Just saying...
(Edited)
Mar 8, 2019
boot2skull
75
Apr 30, 2019
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Amazon also sells 2.5w lasers to the general public. I don't understand the problem. Laser pointers are plenty dangerous as well in the wrong hands.
Apr 30, 2019
Moleman
14
Apr 30, 2019
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But that would be like saying that selling knives is dangerous.. You could stick a knife in your eye...
Apr 30, 2019
Calaverasgrande
1427
Mar 8, 2019
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So if you wanted to mount this on a pice of aluminum and put a couple grips on it, with a battery power supply and finger actuated 'trigger'. How big of a battery would your need. Asking for a friend who wants to make a laser blaster.
Mar 8, 2019
sickopsycho
0
Jun 3, 2019
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You'd have to rig some sort of distance measuring device on the weapon as well, which feeds that info into a microcontroller and focuses the lasers beam on the fly. An Arduino should do the trick, I would think. Then you're going to need some sort of servo to do the actual focusing. I'd say you can probably strap a few laptop batteries on this device and be good to go for a while. If you keep the batteries in their original configuration, you could even swap them like you change clips when they are exhausted. Note: this device would not help you when the robot apocalypse occurs, as this laser is not strong enough to cut metal. For that I would suggest a CO2 type laser in the >60W range.
Jun 3, 2019
asthmaticfish
9
Jun 6, 2019
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You mean a phase plasma rifle with 40 watt range?
Jun 6, 2019
fourbyfive
15
Feb 19, 2019
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This is a rather odd offering I must say. If memory serves, a 1 watt krypton generates so much heat that it requires liquid cooling and chillers to operate continuous . 2.5 watts at 445nm would run hot as well. Is this listing a typo? I think CDRH certification would be necessary to fire this up legally, but maybe times have changed. *If* this unit were placed in a housing with all the mandated safety shutoffs it could be used safely. Otherwise, this would be a dangerous toy to have sitting around. Here’s a thought, those safety glasses don’t look near strong enough to stop a 2.5 watt beam, unless doped with some pretty exotic coatings, which would costs hundreds. Question: Is this a single line emitter or multi-line? If multi-line it could be integrated into a laser light show along with a separate red beam (HeNe). A proper beam splitter would be necessary. Frankly I have never seen this much power for such a small price. Also, I don’t see all the safety warnings and lock-outs normally seen on high powered lasers for sale. I’m curious as to how this could be legally imported in the form shown above. I’ll sign up, but only if multi- line. That’s a whole lot of blue for $75, and I could have a ball with some hi frequency galvos.
Feb 19, 2019
OrangeShadow
115
May 1, 2019
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Isn't Krypton laser basically a vacuum tube? No wonder it produces a lot of heat. That's like comparing a 1 W incandescent bulb with LED of the same light output. Semiconductor laser will produce far less heat.
May 1, 2019
fourbyfive
15
May 6, 2019
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Orange Shadow. Lasers employ many different cavities to produce coherent light. Yes, solid state cavities generate less heat than gas tubes, generally speaking. Heat produced in the cavity has no bearing on heat produced by the beam. Beam energy (joules usually) is determined by wavelength, frequency density, doping, and target substrate among other factors. That’s why I asked if this is a single frequency or a multi-line emitter. This can be crudely tested by firing the beam through a coated prism. If multi-line it will be a higher energy beam. Being solid state, and inexpensive, it is probably single line. A characteristic of many solid state lasers is invisible spurious emissions, some of which can damage vision. Above certain power levels CDRH mandates full optical enclosure of a laser system. So how many one-eyed jacks does it take to turn off the laser?
May 6, 2019
Rapha
16
Feb 19, 2019
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Hi Guys, It should be mounted into something right? I mean you /i cant use it be holding it with my hands...?! So can you please help me understand to which machine/chase should i mount it
Feb 19, 2019
lusername
23
Feb 19, 2019
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Feb 19, 2019
KoBar
11
Feb 14, 2019
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Feb 14, 2019
KoBar
11
Feb 14, 2019
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This laser is forbidden in France, it doesn't follow the norme NF EN ISO 11252. To sell it is dangerous for every body, I am shocked to see it in massdrop.
Feb 14, 2019
xxpowmanxx
4
Mar 7, 2019
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That regulation legit just says it needs to be labeled in a certain way, and since this is a kit, they cannot label it that way.
Mar 7, 2019
Dr_Rodney_McKay
132
Mar 10, 2019
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Ne regardez pas dans le laser avec le reste des yeux.
Mar 10, 2019
russleyshaw
2
Jan 15, 2019
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What's the use case for this? I do 3D printing and electronics as a hobby. Is this the kind of thing that would be part of a CNC setup for laser cutting or is it simply not powerful enough for that and more for engraving?
Jan 15, 2019
MeanEYE
389
Mar 8, 2019
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It should be strong enough to cut thin plywood, leather, plastics and similar materials. Price doesn't seem appealing to me as I did see it cheaper elsewhere. If you have usage case for it, it's fine. However you really need to know what you are getting yourself into. I have modified my 3D printer with 250mW laser for engraving and making PCBs and even this weak version is enough to scare me. Basically light is so strong that even if I look at reflections (like those in video) through glasses it's enough to make my eyes hurt. This is also the reason why I think supplied glasses in this drop are not appropriate. Nothing plastic will provide apt protection. So I'd say, if you need it for something specific, sure. Go ahead, even though I feel price can be lower. If it's just for novelty sake, it will wear off quick and this laser alone is not enough. You'd need constant current control, cooling, etc.
Mar 8, 2019
alysdexia
34
May 6, 2019
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thin -> fine, shallow
May 6, 2019
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