How to shield cable ?

Hi, I'm interested to know why you don't use coaxial cable which is inherently shielded ? I always use a high quality (silver plated copper, PTFE) coax and it has sounded quite good to me, with excellent shielding. Do you think it's better to do your own shielding ? Or is it a matter of having the wire available ?

After some very dissappointed investments in cables, even I did hear very minor differences which I don't have good words or analytical skill to put it in words, I decided to learn for myself if cable does help.
I have some high quality pure silver wire and pure copper wire, I want to put together in different format, like copper only, silver only, copper(+) with silver(-) - my favorite, and copper(-) with silver(+).

I also have more than one size and want to compare solid core with stranded...
Another testing is braided format, but I save it later.

Ok ... thanks for the answer. FYI I made interconnects recently and the improvements were startling, not subtle (previous interconnects were also home brew, but equal to $100 audioquest ICs).

Here's a link to a previous post of mine describing where I got my cable and RCAs (if link doesn't work search forums for Maplin) ....

http://forum.audiogon.com/cgi-bin/fr.pl?fcabl&1006063331&read&keyw&zzmaplin

Regards

Sean

as for sheilding....you can use tin foil if you are getting radio stations.

as for diy get a copy of super cables cookbook www.vacuumstate.com. it was very enlightening. foils and fine solid wire is the only way to go.

good luck

jim