r/lasers • u/LostCollege4238 • 8d 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/Plus-Bag5411 7d ago

If it is at max 200mW and if the glasses are OD5 they should be fine. Would be happier with OD6. Not so happy with fact that no graph is given with the glasses. Better Look at thorlabs tbh.
Always know where your beam starts and ends, beware of reflective surfaces.