My interest is in reducing RF interference in electric guitars in RF-noisy environments by shielding the body cavities with sheet metal.
Would copper sheeting block RF?
Or would it need to be some ferric material?
I imagine aluminum alloy would be RF-transparent - is that true?
Ideally, I would like some material that comes in thin flexible sheets and is easy to obtain.
Any suggestions?
Thank you in advance.

The first question that needs to be answered is what frequency and how strong?

RFI/EMI. Fun stuff.

RFI - shield at one end only, preferably the source

EMI - twisted pair

EMI/RFI + shielded twisted pair

SHield connected at one, end. Doesn't carry signal.

Guitar - he pickup is high impedance, there fore it's length picks up stuff before the pre-amp.

The closer the pick-up to the pre-amp, the less RFI. XLR outputs.

The closer it's turned into a low Z signal, the better you are.

That's first order.

I found the correct answer at another site.
Any conductive material will do.
Therefore
- copper sheeting would work,
- a ferric material would work, but it not necessary,
- aluminum alloy would be unsuitable.
Thanks a lot,

Disagrees are for wrong answers not ones that you personally don't feel were helpful. My answer and eEnergy's are both correct. The size of the ports on the guitar determine what frequencies will interfere and it's likely your lining will be futile.

Disagrees are for wrong answers not ones that you personally don't feel were helpful. My answer and eEnergy's are both correct. The size of the ports on the guitar determine what frequencies will interfere and it's likely your lining will be futile.

Impedance is futile!