Apologies if this has been asked before and my search just didn't turn it up, BUT...
Those of you who saw my 2nd build know that it had a horrendous amount of buzz. I'm sure the cheap amazon pots were at fault and I'll never use them again, but all the same it sent me searching for advice about shielding.
I've seen a few tutorials that recommend grounding the shielding material itself (e.g. lining the control cavity with conductive foil, then soldering a wire from the grounded pot-back straight onto the foil, and then leaving some foil hanging over the lip so that it contacts the foil also on the underside of the cavity cover). And with my very fragmentary knowledge of how these things work, I can sort of see why that would be effective.
The thing is, none of the commercially built guitars I own seems to be built that way. There's always a ground wire running from the bridge to the back of a pot where it contacts all the other ground wires, plus conductive foil on the underside of the cavity cover, but never (as far as I can tell) the extensive "grounding" of shielding material that I've just described.
So since I trust the fine people on this forum a LOT more than random Google searches, I'm asking right out: do you need to somehow ground the foil you're using for shielding? (and, bonus question: if that's the case, why don't Gibson or Ibanez or the budget manufacturers from whom I've purchased seem to be doing this?)
Thanks as always