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So a milspec laser is a laser up to military specifications? Thank god we have you here Jerry, otherwise these questions may go unanswered :rolleyes: Most simple diode lasers will work for a gun sight. The major components of a 5mW gun sight laser don't have too much mass so even if the recoil...

Re: Firecrackers in Canada I have a firework stand that sells firecrackers year round less than 10 minutes from my house. If I want bottle rockets I go deep into Missouri, they sell everything there :D Years ago, when I was 13 or 14, I played around with flash powder a lot. The biggest...

I can order metal super cheap, only in 12' bars though. If you want some stuff cheap PM me and I'll order you a 12' bar and cut it down to 1' lengths to fit in a flat rate box.

Re: NejTech Evolution - a new BOOST driver - Photos added! Cool! Just glad to see that there might be some cheap low power boost drives sometime in the future!

If you come onto the forum with a more specific question you are more likely to get an answer. "Help! I want to build a 500mW green laser!" won't get you too many replies. But, if you ask "I am trying to build a 500mW green laser. Are bonded crystals strong enough for this much power?" will...

Re: NejTech Evolution - a new BOOST driver - Photos added! .36 A is good. That's more than enough for pen pointers which is mostly what I build. If you've given up hope on producing them could I convince you to make me a few board for me to put together?

US international shipping is expensive, especially if you want tracking which you absolutely have to use with ebay. For some reason it's cheap to ship stuff here tracked, not the other way around though.

I use these, cheap and you can get them anywhere. Plus if they fail within a year you just take them to a sears and they give you a new one. Sears: Online department store featuring appliances, tools, fitness equipment and more

That's actually a pretty good idea, but $5! Ouch! I'm almost 100% sure you could find a suitable spring for ~ $0.80 at any ace hardware.

So they tried to scam you once and you decided to go back to buy more lasers from them?

Jerry has no idea where his opinion is. I used to think he was just an ass but I'm starting to see that he is just not all there. The fact that he can't type a complete sentence without adding 2 to 6 periods is also highly amusing. I think of this family guy clip every time I read something he...

Everything he sells can be found cheaper elsewhere. But I guess if you have to order a mini-van transmission and an overpriced 445 diode at the same time then go for it? I think he only ships things once a week too, I think that info is on the shipping page of his website. I can't tell for sure...

There are literally hundreds of threads around here with that info. Just do a search or click any of the banners on the main page and you'll find them.

How old is the 10440? Check the voltage, if it gets to low the battery won't charge right. You can try checking internal resistance too, there is a thread here by Drlava describing the process...

You can use it outside so long as the beam stays on your property. After about 10K feet up you get into class G airspace, you need a permit to do so legally. So, shining it on your fence is OK. Anything else is not.

If you get some teflon tape from the hardware store you can wrap it around the lens and just leave the spring out completely. This is a pretty common thing to do, as you focus the laser the spring will rub on the module and lens and dirty the lens and diode window. If you are dead set on some...

Really Jerry? Is that the best you can come up with? Either you are a complete idiot and can't see how that relates to this at all or you are trying to argue for the sake of arguing. Think about it for a minute, did you require a review for that 10% compensation? No? Then how is that point at...

I second that, are you focusing the laser to a point on the TEC?

And you should state in that review that you received the laser at a pretty good discount even if you intend to post an unbiased review or not. RHD summed up the exact reason that the info on the discount should be disclosed...