I use a Forstner bit, selecting one the largest diameter that will still leave clearance for the round-over on the back..
I then take a second smaller Forstner bit and drill a cavity to accept the pot, a Mini pot here… don’t forget to stop before you go all the way through….that kinda ruins the day..
I turned the cover plate on the lathe, so the fit is easy to control.
and here ya are…
Ron Kirn