If I wanted to make my own speaker cables, is this a good choice for wire?

Mitch2
What I think you may have missed is that I was jsut giving examples and possibilities. AS far as the cotton fiber goes , you might as well go demolish some 120 year old house and rip out the electrical wiring and use that for you speaker cable. Who knows you might get some good copper that way too along with the cockroaches and other creatures that love eating cotton sheathing.

RAMM audio OCC cable. Amazing. 

@esarhaddon 

I get it, and no slight was intended, at all.  Cardas makes good wire. I was just pointing out the promotional rhetoric in their document that ignored the “poly” dielectric yet referred to the cotton filler as the dielectric, since most DIY’ers prefer cotton.  Marketing slight-of-hand.

Mitch2

I guess next time you will have to use a bullhorn to get me to listen! hehehehe

Using inexpensive CAT6 plenum cable - solid copper, not aluminum, you can make an exceptionally good speaker cable:
(from the silversolids.com Blog)

Jung and Marsh stated that their tests showed that the use of multiple thin gauge solid core wires in parallel was the best way to go. This gives you low capacitance with no phase or skin effect problems in or directly above the audible range.
When asked, "What is the real thing about using silver in audio chain?" Mark Levinson replied: "Silver is the best conductor of electricity. Laws of physics. But copper is more practical for speaker cables.".
For a speaker cable, using just one pair of 23 ga. conductors results in a noticeably lean tonal balance but grouping multiple light-gauge wire gives you an even tonal balance without diminishing the desirable high-frequency performance advantages of thin gauge wires. The most cost effective way of achieving this is using plenum type CAT6 Ethernet cable with eight pure copper 23 gauge solid wires and Teflon dielectric in multiple pairs. Uncompromising high-end caliber performance at a bargain price.
The illustration below shows one side: