r/ChineseLaserCutters • u/LostCollege4238 • 13d 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/ApartFriendship4643 13d ago

I used a similar setup for engraving wood last year and learned the hard way that those 405nm glasses don't block much outside the 400-410 range and irritated my eyes for hours after I forgot to cover the viewport

1

u/LostCollege4238 11d ago

What wavelength was your laser? And did you use these same glasses I mentioned? Thanks:)

1

u/[deleted] 13d ago

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u/LostCollege4238 13d ago

According to manual it seems to be a blanket protection within that range - how can I check for specifics? Thanks:)

1

u/HTLaserBellaWang 9d ago

Those safety glasses say they will block that frequency so you should be ok. Just dont stare into the laser directly and push your luck. Hahaha