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    cheap 2.5W laser: fake?

    Hello guys, I recently bougth this cheap 445nm laser (~50$) for a laser cutter project: https://www.ebay.fr/itm/Focusable-2-5W-2500mW-450nm-Blue-Laser-Module-TTL-AnAlog-signal-12V-Engraving/232324215288?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 It is really inexpensive, and...




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