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Just curious what the concensus here would be, but we're looking at possibly getting a laser to etch part numbers at work. My thought would be to get a pulsed fiber laser. We'll mainly be etching non-hardened steel and/or cast iron. Just wondering if anyone here had any familiarity or pointers...

I've been a lurker for awhile, and just started messing around with these myself. Here's my question. I'm wanting to power 7 5mw red laser diodes using a 5VDC 1Amp adapter I have laying around. What resistor do I need to use in front of each laser to feed them 35mA each, to keep from frying...

Yeah theyll all be regulated with the circuit I'm going to use.

Wannaburn, you misread there, that was 50mw, not 500mw. I thought about the fog machine, I just need to see if the photo resistors will still pickup through the fog. I've already ordered some cheap 5mm red diodes, just wondering what the visibility will be like. I've actually kicked the idea...

My initial thought was to use 5mw lasers all coming from one side, and have them move through facing the opposite side without goggles. I'm actually hooking up 3 sets of lasers to a seperate switch. for younger kids, it'll be ankle high where they simply step over, then progressively more...

I'm working on a project for church for our bible school this year, and I'm needing some help. I've been asked to make a laser maze. I don't think it will be bad, but I've got several cheap red diodes that I'm going to try to use. I'm going to run everything from an arduino. What I'd like to...

This is the link for a similar unit. This one states that it has a green laser, but I was told it was blue? I'm assuming it's 5mw based on the use. I don't recall the label, but I'll check on it this evening. Amazon.com: Laser Stars Indoor Light Show - The Most Amazing Laser Light Show You Will...

I'm working on a star projector for a friend, the blue diode in it has quit working. It's a 5mw diode, and I'm not sure where I can find another one that is relatively cheap. This one has overheated. It's pressed into a heatsink, but I think it still managed to overheat. I've got a small fan...

Blue Laser Lamp- with passive cooling technology by Richard Redpath ? Kickstarter So dumb question for you all, if a laser is over 5mw and using a diffraction grating, is it still unsafe for your eyes, without goggles? Would beam expanders work the same way, or would it matter, since the light...

Figured I'd update on my experience. 100mw 532nm- seems to work pretty well so far, good beam, small dot, not sure of power, module appears to be mounted at a slight angle. 200mw 532nm- large dot, haven't checked diffraction gratings yet, dot is about 4" at 20 yards (rough guess). Also, my...

The problem with the low power flashlights is getting close enough with the light. Due to the size of the machine, and obstructions I'll be shining it from 3-4ft away. I know the mix ratio for the dye, but it only lists the 365nm for wavelength, no range. I may just have to ordera uv light, and...

Just curious, but we have a hydraulic based machine at work that is leaking pretty bad. Unfortuntely it is an older machine that isn't easy to get into with other oil based and coolant systems in the machine. I'm looking at running a uv reactant dye through the hydraulic system to trace the leak...

Also, for anyone having trouble ordering, as mentioned before, I ordered on my cell and it went through the first time. Tried 4 or 5 times on my laptop with no luck. Not sure if this was a change in my card provider, or access point, but anyone having trouble may be worth trying it this way.

Yeah, I'm in the same situation. I get an error when I try to process payment. I've tried two different cards, both visas.

1) Nothing over 5mw is good practice. Not sure if it would be any different for pets. 2) Really? Only if he prefers that his cats be blind 2.1) If he is really asking that, he needs to get rid of the laser, since he doesn't know enough about it to need it.

MBDA Germany demonstrates 40 kW laser gun

I agree entirely there, this laser is supposed to be IR filtered, but I'd rather not risk it since most of the energy for unfiltered greens is IR, right? 50-70% unfiltered power is IR, right? Also, without disassembling to look for the filter, is there another way to check if it is in fact...

I'm looking for a couple of reasonably priced green goggles. I have two pair of blues OD4, but they're limit is at 530nm according to their literature. I'm looking at getting something in the 100-200mw range in 532nm. If anyone has suggestions of where I can get some of these reasonably priced...

Just a question, but if they don't have QC and are interested in pushing a groupbuy, wouldn't it be easier to send one each of these to a senior member who is planning on purchase for review? They could then verify output with LPM, IR filter, and etc. for both sides with their comments.

Re: For sale: 2.4W 445nm Steel Laser Great looking laser, but I'm set for now. No silicone boots, you make me so proud. Lol. I really like having the switch like this, makes for a much cleaner looking laser.