Reply To: Laser – J Tech Photonics Tips and hints

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Bryan
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Here are the results after it was painted flat black.

http://imgur.com/p5F51op

The paint was easy to remove with acetone. The etching is black in color – and hard to see unless at an angle. I am unsure if I made it all the way to the bare aluminum.

Settings: 1.7A @ 4000 mm/min speed
I will have to continue testing at slower feedrates to see if it penetrates any further.