Blue laser from eBay does not burn

[Lazylizard]

I bought this laser from EBay, and it says it can burn stuff, but my laser doesn’t burn anything. Is it anything I can do to fix this problem?

 

[Lazylizard]

I bought this laser from EBay, and it says it can burn stuff, but my laser doesn’t burn anything. Is it anything I can do to fix this problem?

I can’t post a pic and I can’t link it, but it is a blue/purple laser that looks like a lightsaber

 

[julianthedragon]

I bought this laser from EBay, and it says it can burn stuff, but my laser doesn’t burn anything. Is it anything I can do to fix this problem?

1) Before I get to any other point, you should be wearing the appropriate OD6+ safety goggles (from laserglow) while using this potentially Class IV laser. If you aren't then don't go any further
2) Burning depends on power density. Make sure the beam is focused down to a small dot for burning, using the focusing thread if there is one or external lenses.
3) Burning depends on exposure time. Hold the laser still to burn, don't wave it around.
4) Burning depends on the material the laser is pointing at. Black objects and the color that is complementary to the laser burn the best, but different materials (paper, wood, plastic, glass, etc) will affect the burning ability as well.
5) eBay lasers are known for being cheap and ripping off consumers with overspec ratings. It's likely the laser you received is simply less powerful than advertised.
6) Make sure you're using the correct batteries and they're charged.

Safety is number 1, and try doing your own research for simple questions and laser safety, there are lots of threads about these kinds of topics on the forum and not everyone is going to answer questions like this

 

[Lazylizard]

1) Before I get to any other point, you should be wearing the appropriate OD6+ safety goggles (from laserglow) while using this potentially Class IV laser. If you aren't then don't go any further
2) Burning depends on power density. Make sure the beam is focused down to a small dot for burning, using the focusing thread if there is one or external lenses.
3) Burning depends on exposure time. Hold the laser still to burn, don't wave it around.
4) Burning depends on the material the laser is pointing at. Black objects and the color that is complementary to the laser burn the best, but different materials (paper, wood, plastic, glass, etc) will affect the burning ability as well.
5) eBay lasers are known for being cheap and ripping off consumers with overspec ratings. It's likely the laser you received is simply less powerful than advertised.
6) Make sure you're using the correct batteries and they're charged.

Safety is number 1, and try doing your own research for simple questions and laser safety, there are lots of threads about these kinds of topics on the forum and not everyone is going to answer questions like this

Do you know which battery’s I should use instead, right now I use 16340 1300 MAh 3,7 V battery. Does the laser get stronger if I buy battery’s with higher Mah?

 

[bostjan]

Do you know which battery’s I should use instead, right now I use 16340 1300 MAh 3,7 V battery. Does the laser get stronger if I buy battery’s with higher Mah?

Use whichever fully charged batteries are recommended. The driver should supply the correct voltage and current to the laser, as long as it's getting enough juice. If you change the batteries, you could damage the driver.

The mAh is the rating of how much time you get out of the batteries before they need to be recharged. It should have nothing to do with your problem, unless the batteries are already depleted, in which case charge them or replace them with fresh ones.

I bought this laser from EBay, and it says it can burn stuff, but my laser doesn’t burn anything. Is it anything I can do to fix this problem?

I can’t post a pic and I can’t link it, but it is a blue/purple laser that looks like a lightsaber

No idea.

It seems like you don't have enough information for anyone to help you, I'm afraid. You only described half the lasers out there, and there are millions of different cheap lasers. Is the laser focusable? What is the rated mW output? What are you trying to burn?

In my mind, not being forthcoming with this information is almost definitely indirectly why you are unsatisfied with your purchase. Would you buy a computer I was selling to you, if all I said was that it was a computer? And then if you were naïve enough to buy it, and you went onto a computer forum and said "I bought a computer from some shady eBay guy and it won't turn on, how do I fix it? I can't tell you any more about it or post a photo, but it's the one that looks like a black rectangular box," would anyone there be able to help you?

So you might have bought a piece of junk, or you might have bought a nice laser and broke it. Or you might have bought a nice laser and not broken it, but maybe you put the batteries in backward or have the lens cap on. There is literally no way anyone can accurately guess without more information.

 

[paul1598419]

I can’t post a pic and I can’t link it, but it is a blue/purple laser that looks like a lightsaber

You should be able to post the link in its entirety as a link like XXXX.com. I need much more information to answer your questions. From your description it sounds like a 405nm diode laser. Good luck.