Laser rust remover safety question

[kerry_vaniseghem]

I saw an advertisement for a laser rust remover. They claim that it is safe to the human skin if your run it across your hand. Supposedly, a 1KW laser.

How can a laser strong enough to burn rust off metals not hurt the human skin ?

See ad below:
Laser Rust Remover

https://yhmhg.myshopify.com///produ...AYXYpBd8lla2cdwhnbw9CJqUIdLRUmrYEE-y8l-aB_uvc

Thanks,
Kerry

 

[IRstuff]

Your link claims 100W.

So ablation is a function of the absorptivity of the material in question at the wavelength in question, which is 10.6 um, plus, the dwell time. So, the rust is highly absorptive at that wavelength, while the underlying metal is highly reflective; therefore, the rust rapidly heats up and vaporized because of its relatively low thermal mass. On the other hand, while human skin is likewise highly absorptive, its thermal mass is tied to the water content in the skin and underlying tissues acting like a heat sink.

That said, if the person in the video was to stop the laser in one place on the hand, ouch! In any case, a 1-kW laser is not a toy, and caution should be exercised.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

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[MacGyverS2000]

$75 for that machine?! No bloody chance!

Dan - Owner

http://www.Hi-TecDesigns.com

 

[IRstuff]

I know, right? If I wasn't so money conscious at the moment, I'd order one just for giggles.

TTFN (ta ta for now)
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[TheLaserburns]

Beings though the link you provided is now not available may answer some questions

If you ask me to do something, I will do it. There's no need to nag me every 6 months

 

[IRstuff]

These and these are probably more realistic in price. Their power is comparable to laser machining systems, so anything less than $10k is likely to be fake.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

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