What kind of foils r used under the PG?

[jpwannabe]

I'm bulding a new Pickguard, and I think i need to cover the back bit foil paper,

what kind are those? And is it a must ?

thanks

Alan

[Hotrock]

Yeah it's a must. It shielding for the control cavity.

Have a look in the electronics section, there's loads of info about it there

[jefm]

Well only if it does cover the electronics cavity....if it's something like an SG it wouldn't be neccessary

[Ki swordsman]

you could just put it around the inside on the wood though right?

and would it still work under a layer of paint?

(i'm thinking of putting a clear PG over front routed guitar....)

[Brian]

It helps to have the actual electronics such as the pots and switch touching them where they mount to the guard and while most manufacturers are using a tape simular to air conditioning duct tape (the aluminum type) copper makes a better conductor for the job.

[Ki swordsman]

i could attach a wire from the shielding on the wood to the electronics on the pg though?

how close to the controls does it have to be? what's the physics behind shielding?

[KTLguitars]

The shielding is transporting unwanted electric energy radiated e.g. from fluorescent lights etc., to ground, avioding unwanted hum and noise signals in your wiring. This is more important with single-coils than with (hum-canselling) humbuckers. However magnetic energy can only be shielded with soft iron and will not be much attenuated with an aluminium or copper shield - though magnetic energy is more a local thing so with a guitar you can just move away a few feet from the source. Anyway it's a good habit to ground, by wire, all pot- and switch housings.

If you absolutely don't want to sheild your see-through PG -just do as you said - sheild the cavity, and wire all metal parts housings. Avoid long free ends, especially on capacitors, and keep wiring as close to the ground shields as possible. (All grounded metal parts e.g a jack mounting plate work as a shielding)