Rotary Tumbler coat removal on 30w Galvo

Hey everyone! I am trying to dial in settings to remove coating on metal tumblers without marking the metal. I have seen this done with other lasers and I am just not sure if mine is even capable of that. I have a San Antonio Polymetal 3.0 30w machine. Everything I have tried still leaves lines on the metal. If anyone has advice on removing coating with my 30w galvo, any help would be appreciated.

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Bump the frequency way up. Lower interval, higher speed.

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Go slightly out of focus to soften the engrave spot.

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