Shielding - effects on tone / resonance

ICBM

normula1 said:

You should solder the copper tape as over time the joints oxidise and become less conductive.

Exactly. It's not much work either - you don't need to 'seam' the joins, a single spot between any two pieces is enough.

FelineGuitars

Not all shielding paints are equal 
I often open up guitars that supposedly have a painted on shield and it might as well be black paint (I actually suspect it often is)

I use an expensive nickel screening compound that I found years ago and it works really well 
I find no negative effect on tone but greatly better rejection of noise

It has been a constant on most Feline builds for nearly 18 years and we use it all the time in upgrading other guitars

Downside is that you can only either buy it in a 400ml aerosol or a 5litre tin (which at £700 a tin gets a bit eye watering)

I did sell some of it to other luthiers last time I ordered though - think GSP loves it too.