I noticed that many of my single coil guitars have the hum that goes with them. I figured I would give shielding a try, I painted the cavaties with shielding paint and copper taped this to the pickguard metal foil. The good news is that the hum in almost gone and it makes no difference if I touch the strings or not. The bad news is that it does suck some of the tone away. I pulled the pickguards away from the shielding tape and the tone was better-brighter but with more clarity. I just did this with two strat like builds and will never shield another guitar. I'm hoping that if I just sever this ground connection I can keep the cavaties painted and it will sound like it did before. Just my take on the debate.