I have been thinking about doing that too I have a CNC with live tooling . As far as the laser goes you'll need a fiber laser to really mark the aluminum 60 W CO2 laser this really is not the way to go I have tried with mine and just was not happy with the output my friend has fiber laser and it I marks and eches into the aluminum .it has a much better. Look Just my 2cents
I have some enduramark to do chemical marking figure i will give it a try one of these days
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