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I mentioned in the other thread that I'd like 2x as well.

Can I get in on this as well? I'd like 2x sets. Just in case I don't check this thread often enough, if or when the GB occurs, can you please message me just so I make sure I pay on time? Thanks!

Um, why is this in the Safety and Legal Issues forum? The "Legal Issues" is supposed to be related to laser-related legal issues, not eBay policy. If anything, this should be in the "Other" category.

It doesn't matter how big the dot was on ceiling five feet above your head. That beam was a mere foot away from your face as you stared intently trying to position whatever inane thing you were trying to burn. You're absolutely ridiculous. It's not "contained" even "somewhat" if you get hit by...

I was cringing just looking at the video from the reflections on the plastic. Those laser dots are hard enough to look at when they hit a wall, but on a shiny piece of plastic at that distance it'd be unbearable and might directly reflect into his eye. It's just plain idiotic. Oh yes...

Though I don't think a long prison sentence is always the answer, I don't agree with the idea that only crimes that result in harm should be punished severely. Punishments should serve both as deterrence and rehabilitation. Deterrence means that the risk calculus is about attempting something...

Have you tried flipping the lens barrel around backwards? The glass-lens side of the lens-barrel should be closest to the laser diode. If both sides have glass for some reason, try flipping it around to see if it helps.

Nice job, but how are you going to do transfer these off the translation stage?

(emphasis mine) I take issue with this statement. Your job, as far as shipping and status, only "ends" once the package has been delivered. Until then, the transaction is in limbo, and that uncertainty can fuel a lot of concerns in the buyer. A lot of these problems can simply be solved by...

I hate using solder wick. I'd invest in a solder sucker. Then just heat the blob, press the button, and the molten solder gets sucked into the sucker. As stated above, use a multimeter to ensure you don't have any conductivity between the case and the pin. Don't eyeball such things.

If you want to kill flying bugs, I would get a Bug-A-Salt gun and shoot them with that. They work pretty well, are fun to use, and there's no danger of blinding yourself (with light). These hobby lasers can burn stuff, but it's actually a pain to hit something small like a bug. Any laser...

There is some really annoying stuff with regards to changing the window styles to not look like bleak white all the time. Would it have really hurt Microsoft to retain the ability to have different colors for active and non-active windows? Even those Aero hacks only half-work. At least 10...

There are some more extensive maximum permissible exposure (MPE) calculations you can go through taking into account surface reflection, power, duration of exposure, wavelength, pulse length, etc. Here's a site you can go to to read about them. For the wavelengths and systems you'll likely...

Sometimes the best in people is shown by how they resolve problems. Last week I ordered a diode and some fans from DTR's site. I've been shopping there for a long time and this was another routine purchase. Shipping was very fast, but there ended up being a mistake in my order: the wrong...

The beam expander will be nice, but unless you focus the light back to a point it won't burn anything.

No, I meant the other way around: you stack up in the slow axis and correct the fast axis. That way you can stack them as high as you want the final beam diameter, and then match that with your correction. It'd look like: ----------------- correction ------- -----------------...

The higher PWM frequencies would actually be desirable to reduce flicker, especially as 100hz is pretty slow. I think the laser would probably handle it too, and most of the components in the drivers would be fine, or at worst just not be able to respond fast enough. Anyone else have any insight?

Another thing you could do is just stack up the knife edging only in the narrow axis, achieving a stack 50-80mm tall, and then correct the beam with cylindrical optics + prism pairs in the wide axis to form a "square" beam of the target size.

You can determine the "exact" ratios by using the luminous efficacy values for different wavelengths, which correspond to how bright your eye perceives certain wavelengths. To get the ratios, you find the values of the wavelengths, for example (just using round numbers for wavelengths)...

Maybe you could use it as a beam-block. :)