I have some shielding paint. There are no instructions on it. All I gotta do is put on two coats inside the cavities and on the inside of the plates, right? Is that it, or is there some other step I'm missing?
Is there ANY reason not to shield a guitar?
It takes me 2 or 3 hours of work to shield a guitar with copper foil, but if you have the paint on hand, that takes what? 15 minutes a day,,,
It is arguable just how much shielding does for hum and noise, but why not just play it safe?
And the cool thing with shielding is, you do it once and you never have to think about it again.
I was curious because a respected luthier I know hates all of the shielding products. He claimed it makes no difference. Skim through the posts and you'll see jackthehack has a pretty good post in there about it. That said, I still shield my basses but it is nothing more than a placebo effect for potential buyers. I have had basses with pro shielding jobs and humbuckers that would buzz like crazy in some rooms and not at all in others, so I'm agreeing with jackthehack.
IMO the best ways to reduce noise on your instrument are 1) buy high-quality cables 2) get an amp with a ground lift 3) don't stand near neon lights and 4) EQ it out.
A point to consider is shielding when using a preamp. Obviously the preamp can boost the volume, and in turn the noise that is already there. But, if the preamp needs shielding (because the preamp isn't shielded) it is a potential source for a lot of noise. This would be a case (preamp model) by case issue but worth considering.