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Hi, I was told once laser lens have two sides and if I insert it in the wrong side it reflects more light and kills the diode. So I was wondering - is it a problem if I overfocus a laser (in which the lens are in the right side)? I mean for example that after I focus the laser to get a single...

Hi, I recently disassembled a green pen laser that I bought in dealextreme 2 years ago, but to do so I had to remove the button from the driver board. after I did so I realized that the copper squares (like those where you solder laser diode to) that were where the button was connected removed...

Hi, I have a big problem with soldering - I already two times tried to solder to driver - first time it was a laser diode and the second time it was a part fell from violet laser's driver. in those two incidents I just in mistake connected with solder two dots which shouldn't be connected (they...

No matter, I will test this laser. :)

Hi, I want to buy batteries but I really don't know which. What company manfucturing good 14500 batteries? And do the batteries in Dealextreme or good? Thanks, Yuval

Hi, In mistake I bought a the wrong laser driver so I need only 4.5v instead of 6v. In the host I use I have place for 2 cr2 batteries. What batteries can I use to supply 4.5v? Thanks, Yuval

Hi, I have just recieved today a heatsink that was missing from a host I purchased somewhile ago. I don't understand how I have to use it. Do I have to push the diode into the hole so it won't fall down when I turn the heatsink down? I tried hard to push it and then I tried to use pliers to...

Hi, I want to buy 2 laser hosts for red and blue lasers. Where can I get hosts like these: LZMN - Mini 650nm 200mW Focusable Red Laser Pointer 2w Blue Laser | 445nm 2W Laser pointer of Luna Series Focusing Laser Host - Red, Infrared or Blu-ray Lasers - Detailed item view - OdicForce Lasers...

Hi, I was thinking...How much did green lasers cost 5 years ago and 10 years ago? Do you believe that 473nm lasers and yellow lasers would become as cheap as green lasers cost today in 5 years or 10 years?

Hi, I want to buy an 1.5w 445nm laser. Where can I get protection goggles for less than 40$? Are this safety goggles good?: Green, Blue & UV Laser Safety Glasses & Goggles | Dragon Lasers And when I wear safety goggles, what is the safety distance to aim the laser? Thank you

Hello, I bought some days ago some parts to build a red laser: Host Laser diode Diode driver I read in the host information that I should use 2X CR2 Ultrafire battery for a red laser and this driver. My question is - Do I need this battery or something else? (Because they meant that I should...

Hey, I noticed that if I aim my 50mW green laser pointer through the red len of 3D glasses (in the type of red-blue lens 3D glasses) Almost all the light disappears and I see about 3mW dot. Then I tested it when I wore this glasses and I closed the eye on the blue len and when I checked if I...

Hey, The crystals/lens that I have to use to create the green light can be burned? Do they similar to laser lens that must be coated for high power lasers so they won't butn? Thank you!

Hey everybody, As you can see I registered almost 3 years ago, I just purchased here a laser and before two weeks I back to the forum as I started loving lasers and I wanna learn more about them and build them alone for the fun. :) Actually I really noob in this topic and I know nothing about...

Hello everbody, I really enjoy building things and I would like to learn to build lasers. I started yesterday reading a book to understand how the laser works but I wish to start right now to build a cheap laser. Would you give me please a tutorial for building a laser that costs 30$ or less...

Hi I came to this forum because the local forum of my country is dont answer good about my question. This is the laser I bought: DealExtreme: $53.78 200mW Green Laser Pointer Pen Black When I target my laser on the wall 1 meter far from me' how much it hurt my eyes? I have glasses number -4.5...