Lock washers and copper tape

[mjlee]

I've covered my pickguard with copper tape, and now installing my CTS pots. Usually I would use the star (lock) washer  between the pot and pickguard to help keep the pot from twisting around if it gets a little loose, but not sure if this would trash the copper tape too much. And/or not make a solid ground connection with the tape, since it might just puncture through. The tape seems pretty thin. Any thoughts?

 

[mayfly]

The washer certainly may punch through the tape.  But even if it does it will still make good contact and won't change the overall shielding behaviour.