Aluminum foil acting as shielded cable?

[ianmgull]

So as some of you know I'm building a parallel distortion box that has many different PCB's in it. I thought from the beginning that noise might be a problem so I tried my best to minimize it (star grounding, crossing +9v at 90 degree angles...). There is still a bit of hum on some of the channels so I was thinking...

Because of the large power requirements for many different boards, I have several lengths of wire +9v wire running parallel to themselves. Correct me if I'm wrong, but it's my understanding that this will amplify the inductive properties of the wire. Sooo.......

Would wrapping the +9v wires in aluminum foil and grounding the foil act as a sort of "poor mans shielded cable"? Do you think this would reduce some of the noise?

[GibsonGM]

IMO, the grounding is more important, and it sounds like you've paid attention to it.  I don't think it could hurt (and will probably help against stray radiation) to shield the V+ lines, grounding only 1 end of the foil.  You'd have to be careful with it so you don't short to anything else, but hey, it's worth a shot if you can't simply route them along 1 side of the enclosure....