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Engraving with 445NM laser

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planing to buy a cheap laser engraver from Aliexpress
445nm, 10w, 10W pulsed Average 5.5-6.5W.

my main goal is to mark anodized aluminium, the big question is while i know most of them can't mark aluminum i also saw laser modules from Jtech the do just that with a lot less power.

and i can't find any other laser online that is a diode 10W

need advice to clear things up

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