can an j-tech 44w laser engrave on metal.
If so, how to do it.
It’s a diode laser, look around the forums for the available options. It very much depends what exactly you want to do.
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Any metal with high heat conductivity will fail. That only leaves stainless. The marking is more anodize than etch. Some success can be obtained with laser marking spray like CerMark on some metals.
Tell us what you want to do.