https://www.amazon.com/engraving-machine-Engraver-engraver-7-5X7-5CM/dp/B07G6VBTKL

I think it's sold under a lot of brands. It's not particularly powerful. It didn't get all the way to bare metal on the lower but it gave it a kind of subtle look. I think you can just run the same job over a few times if you want to engrave a little deeper.