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How do you guys say "18650"? Do you say "eighteen six fifty", "one eight six five zero/oh", "eighteen thousand, six hundred and fifty", "one eighty six, fifty", "eighteen sixty-five aught"? I know, it's trivial, but it would be nice to know how most of you answer when someone asks what kind of...

Why exactly is it only possible to make plain old diodes that produce only a few wavelengths? Why do we have to produce 532nm light with IR flowing through a crystal? Why do we have to produce 488nm light by passing a beam through Argon gas? These wavelengths are functionally no different from...

I did a couple of forum and Google searches to find an answer, and couldn't really find any information about it. Where exactly do you find a red (any red wavelength works) diode that can put out 500mW+? What can you harvest them from, and is there a place to purchase 500mW+ red diodes by...

On the WL website, there are two "Expanded Lens Kits" - one for the Arctic, and one for who knows what? I'm referring to the latter. It doesn't describe which lasers it is compatible with. However, both the Pulsar and the E3 Elite (green) have "Expanded Lens Kit" under their ordering options...

I've been waiting for response from LarryDFW on this, but I need a charger ASAP, so I can't wait any longer. Anyone know if the prices on LarryDFW's batteries/chargers include shipping to the Continental US?

I've seen a few infrared builds with focus rings. How exactly do you accurately focus infrared? It's not visible, so you can't exactly see where you're putting the focal point. I suppose you could put your hand in the beam and feel for the point where it is the hottest, but that's just stupid...

I contacted Iknitsteel on here wanting to purchase one of his awesome Tritium keychains. Unfortunately, he's recently started school and is no longer making them. I know he's been selling them on here for a while, so I thought this might be worth a shot. I'm wondering if anyone here would be...

Is it actually possible to get through to a live human being with the phone number on Wicked Lasers' website, and if so, does anyone there actually speak English, and since they're in China, do I have to call in the middle of the night?

Is there any functional difference between the various popular wavelengths of IR? I mean, any particular reason to own an 808 and a 1064?

I was comparing the two popular 405nm AR coated lenses for a custom Blu-Ray I want built. 405-G-1 AixiZ 405nm coated glass I read a review from Jayrob saying that the 405-G-1 offers higher power, but has a more dispersed, square beam. He said that the AixiZ 405nm lens offers lower power, but...

I wasn't sure what section to post this in, but I figured this would be the best one, since it's about learning how to build. Does anyone know of any extremely cheap complete kits available somewhere, that include every component: host, driver, heatsink, lens, wires, battery spring/anchor...

I'm trying to get an 8X Blu-Ray laser built. I really love Jayrob's Micro Chrome and Stainless Steel 10440 hosts - both of which use AAA batteries. I've contacted a few of the builders here, and heard from one of them that Jayrob said the wattage I'd want from an 8X (350-400mW) wouldn't really...

I've noticed that pretty much every 18650 charger has the two long charging slots running vertically, but also has two horizontal slots that are about half the length. I can't find information on any of the websites selling the chargers as to what type of battery the two short slots are for...

Do people ever run DealExtreme Group Buys simply for the sake of getting >5mW lasers for those of us in the US? I'd like one of their higher-powered focusable or waterproof or maybe even kaleidoscope lasers - like the 100mW or 200mW models. Not sure how to get one of them when DX won't ship >5mW...

I wasn't sure whether to put this here or in the Tutorials section, but since it's about me wanting to pay someone to do something, I figured the "Buy/Sell" section would be appropriate. I was wanting one of those Sonar lasers from Wicked Lasers, but I've learned that they aren't focusable, and...

I previously included the Sonar in an order, but cancelled it when I found out that it uses CR123 batteries. I was under the impression that these are expensive and somewhat uncommon. I also heard that the rechargeable ones are the wrong voltage for use in these lasers. Anyway, I'm still...

I have ordered a Sonar from Wicked Lasers. The specifications state that it uses CR123A batteries. So I'm wondering if it will function with "RCR123A" - the rechargeable version of the CR123A battery. I'd like to purchase some from Amazon. I've heard that WL says that their lasers are not...

I know that Wicked Lasers doesn't have the best reputation, but they claim to include several features in their lasers that set them apart from other dealers - heat dissipation for unlimited duty cycles, IR filters, etc. So I was wondering - when purchasing a kit from Jayrob or elsewhere, and...

I was doing a Google search to find an answer, and had no luck. What is the usual wattage of those little piece of crap $0.99 red laser pointers you pick up from the dollar store?

Because I'm aware that violet beams are not highly visible, I'm going for an inexpensive violet pointer in the 5-ish mW range since even a higher-powered one isn't going to be highly visible unless I'm willing to pay many hundreds. So I was looking at the DealExtreme 5mW Violet pen, and it...