I was watching a show on TV, I think it was "how its made". Anyway, they were cutting an aluminum panel that was going to hold a bunch of switches and gauges. They put a finish on the aluminum that looked like a bunch of overlapping circles.

What is that finish called? I thought it was "engine turned" or something? Of course when I google "engine turn aluminum" I get all sorts of links about maching AL on an engine lathe

I have a trade show coming and I want to machine some fixtures in aluminum. They always get beat up so I figured a nice coarse turned finish like that would look OK even after being scratched. But how to achieve it? It looks like it was done with something like a wire wheel or maybe a sanding disc, either in a hand drill or maybe using an angle grinder?

I'm sure someone knows what I'm talking about - any pointers?