Yes, very nicely done. I made a pair of 7 volt cables this weekend also. I used some Chinese balanced cable from Amazon, some Neutric connectors from mouser, and a connector for the power out of my HDPlex 100 LPS (some funky screw on "aircraft" connector). Cable to the Uptone Ultracap LPS1 and then one on to the microRendu. I'd like to claim that I detected some blatant, or even, subtle, improvements in micro detail, or bass tightness, but then I put the volume back to my usual, and it sounded the same.
Fun exercise in cable making. I do feel better knowing what the wires are, and that there are no stamped connections present.
Although I had no issues with the wrapped shielding, be sure to always check your cables for shorts after creation, just as he showed. I was having issues with all sorts of components until I figured out that I had a bad (commercial) XLR cable (intermittent shorts). I started making interconnect cables of my own after that, and it's why I had that balanced wire to begin with.
I just used one of those cheap 3rd hand things to hold either the connector, or the wire.
Next up, some long RCA interconnects using mini mogami quad.