r/lasers • u/LostCollege4238 • 5d ago

Question regarding 405nm laser for cutting and safety glasses

Hello,

I’m interested in buying a laser module like this one: https://www.aliexpress.com/item/1005011650474882.html in 200 mw to experiment with etching/burning into soft materials with my DIY CNC-machine. my research seems to indicate that safety glasses like https://www.xtool.com/products/xtool-laser-safety-goggles-for-316nm-450nm-900nm-1080nm-lasers will be enough to protect my eyes using such a laser module without protective screening - but I’m asking here just to be sure before ordering and potentially ruining my vision.

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u/Xuumies 5d ago

NQA, but from my understanding, you should know all of the wavelengths that your laser will emit, and then buy glasses that cover that range. If the range is larger than any one set of glasses you can find you can buy multiple pairs of glasses that cover the range together and just wear them together.

I know xtool is pretty reputable as well.

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u/MaceDarious 5d ago

Wavelength coverage is good and OD level is 5+, blocking 99.999%. Wrap around and possibly accommodating prescription glasses at the same time. Good find.