I used a helix braid similar to the BH cord. In fact and easy way to do it would be to buy the BH cord and then make the appropriate mods. Once I braided the wires, I put a tinned copper sleeve over them and ground that to the AC end. I used Furutech on both ends, but the C7 was the challenging part. The Furutech C7 does not fit properly, so I used the cap of a guitar cleaner bottle, cut a hole in the end to slide the wires through, filled it with hot glue, and then put the shrink wrap on it. See the photos below.
I shielded my cord since we have a lot of electrical interference around here. The shield and a C7 female end is the only mods needed if using the BH cord.
Below is an image of the C7 and AC plug, soldering a ground wire to the tinned copper sleeve, wire config (note where the green ground is), a close-up of the cap I used, and a full image of the finished cord.
