Yep, i considered slot-car braid (i'm a member of a slot forum too), i just thought it might be a bit of overkill, too wide for what i needed.
Even on the slot site the guys recommend stripping old tv/video cables for the braid.

I work in the TV broadcast industry, have access to loads of old video cable, and even i couldn't be stuffed stripping long lengths hehehe.

But, it's an avenue to contemplate.
Thanx,
MM.