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Wound up trying engraving on an aluminum plate, and not only did it not warp from the heat, but I think I like the effect a lot better than the polished stainless. I first wiped the entire plate down with a high power/fast speed scan from the laser, and then engraved the image using a slower speed to darken the metal in the engraving. This is readable from much better angles than the stainless steel plates.
But still playing around. I usually go play on the laser some nights after Connie goes to bed. Helps occupy my mind.
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