Instead of building a drag chain system to hold the air hose, power cable and vacuum hose at the side of the table, I used a length of aircraft cable, some roller clips, and some springs.
It’s still a bit of a work in progress. The metal rollers don’t move very smoothly on the metal aircraft cable, so it jerks and jumps a bit. I’ll come up with a better solution…
EDIT - I’ve modified the drag chain alternative a bit to reduce the jumps/jerks. A new video has been added in post #30.