We had an engraving machine at a previous job and I was tasked with making plates quite often. The little machine was somewhat high maintenance and I ended up making way too many signs for a sister plant, so we shipped them the machine and started buying ours from a local trophy shop. Much simpler for us at that time.
Now at this job, I found Carolina Laser which I have found to be excellent, fast, and fairly priced.
https://www.legend-plates.com/
They're great if you decide you don't need to have your own machine. You can design the plate right on their webpage and save and repeat orders.