Right now, you can get a diode laser engraver on eBay for around $100 USD ... designs that are actually built with community in mind. Projects like the Engravinator from [Adam Haile].
This process allows for incredibly accurate designs, whether for artistic projects or industrial applications. What makes laser engraving so versatile is its compatibility with many materials ...
Now I wasn’t 100% sure what I would do with a laser engraver, but I thought it would ... simple control protocol and there are a few projects out there to get it up and running.