What are the best DIY cables you've heard?

The non-adhesive PTFE plumbing tape is what I used and because it sticks to itself it worked just fine, and I haven't had any problems with cables unravelling.

And I didn't use any heat shrink tubing, or anything else around the PTFE tape.

However I did cheat and use some double sided tape at intervals along the PTFE tubing in order to help keep the wire in place while I got the tape on. Since the tape is paper it shouldn't affect the sound.

As far as whether to run the wire down the middle or use Chris's design I would say that running it down the middle is:
a) much easier
b) lower inductance (since coils are inductors)

If you do both please let us know how it sounds.

I've got to try the above ... thanks Tom and Lugnut. I made some interconnects from some spare RG-217 MIL RF coax cable (it's silver plated OFC, large diameter, very low loss coax). On my humble ($5k) system they made more improvement in definition and "airyness" than any component upgrade. Cost about $15 per set.

RG217 is absolutely horrible to work with, though, since the double sheathing can cut your fingers to shreds.

I made some cables per twl's recipe last weekend and they do beat my RG217 cables, by a small, but significant margin.

Since I already had RCA plugs lying around, and PTFE tubing it cost me $4 for the magnet wire. What a bargain.

Thanks for the recipes guys ! Twl .. do you have a good speaker cable recipe ?