I want to attach a panel mount potentiometer to a PCB. But I need the bushing to be grounded. Ideally I would just make the hole for the pot thru plated but the fab does not permit really large thru plated holes. So my first attempt is two SMD pads with a thru plated hole in the middle like this:
This obviously has issues. Can anyone recommend an alternative solution?
If not, do you think this would work if I accept all of the overlap and clearance issues with these pads? Will the hole actually be through plated so that the top and bottom pads are in fact connected?
UPDATE 1:
As suggested by Peter Bennett, a possible solution is to make a circle using the bStop layer to expose the ground plane:
So there would be no contact on top but I think because the tin is slightly raised and soft it should make good contact with the bushing. We'll see ...