Quote Originally Posted by RADCOM View Post
...
Any material scientists what to comment...is straight polyester or a mix better?
Well, for optimal thermo-capacitance, you will want a polymer resin fiber with a halide core woven to 60 strands per inch in 5 strand bundles.

That was actually just me talking out of my ass. It really doesn't matter what material it is made of as long as it isn't something that attracts dust. The weave is only important for aesthetics... some people want it to only partially conceal what is inside the sleeving, others want it completely concealed. Aside from that, there really is no difference.