I’ve researched before using the same laser on metal or mirrors. Something needs to be put on the surface to cut down on the reflection of the beam. Even with glass and acrylic something needs to be on the surface to allow the laser to leave a mark. With glass the beam passes through to your work surface and doesn’t touch your material. With stainless steel I found a product called brilliance laser ink. This leave a black line fused to the metal surface similar to welding. The ink is a powder that washes off cleanly where the laser didn’t touch. So I also believe that by trying to laser the lighter you may have inadvertently shot the laser back into the lenses.
From what I gathered, the mirrors were damaged, talked to someone from the company and ran their tests.
I was able to normally engrave a bottle opener like you have in the first picture (before the zippo thing)
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Hi
I am having similar troubles with my TT 10Watt. I am following this guide to systematically find the problem. Hope it helps you
Hello, thank you to everyone.
After endless hoops, after twotrees sent me the wrong replacement part 3 times, I finally received the right laser module.
In the end, it wasn’t me who burnt the laser, it was defective from the start. But I am now scared of possibly burning it anyways.
Wanting to avoid possibly burning it, I’m asking for your advice.
When searching for what distance should be between the laser head and the surface (this device doesn’t have autofocus), some people were saying that I should use the wavelength (450nm) as the distance.
If I keep the laser head at that distance, it doesn’t mark stainless steel at all, but it does mark wood. However, it doesn’t seem to mark it well.
Can anyone tell me what distance from my laser head should the object be? I can’t find it in the book or online.
Now I understand that each device is different, so this is my device : TTS-20 Pro Diode Laser Engraver - TwoTrees - TwoTrees Official Shop
And this is the scale that the device came with : https://i.imgur.com/BIufBMY.jpeg
Do a ramp test to find the correct focal distance for your laser. There are many videos online showing how. This is just one.
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Thank you!
But if anyone has this exact model, I’m still interested in knowing what distance you are using
That’s nonsense. Neither you can set 450nm as distance, nor you can set 450mm. Each laser module has a defined focus distance that the manufacturer should communicate. Stick to that. Sometimes you adjust it a few mm depending on requirements, but that’s all.
What’s more important: be very careful with reflective surfaces. Either paint it black/dark before, or put it at a slight angle, such that the beam is not reflected back into the optics.