In "Shielding the Beast" on GN1, the last paragraph of the "Why a 440V Capacitor" section states "The metal shaft on the switch and all the pickguard mounting screws will not be isolated either." Can't the issue of pickguard mounting screw isolation be avoided simply by leaving small borders with no conductive material around the mounting holes on both the back of the pickguard and the body of the guitar? It seems like that way the screws would no longer be electrically connected to anything, but there should still be enough conductive material to make the shield continuous. Thoughts? Being a newbie, I apologize in advance if this question has already been answered somewhere in the past. I did read through most of the recent posts and did a couple quick word searches through the whole forum before making this post. Thanks.
When I did my guitar I punched holes in the foil with a paper punch, the kind that makes notebook-sized holes. The inner and outer foil makes contact all the way around and the effect on the shielding should be close to nil.