It's a single strand of 28 kanthal.
I made one coil about 4 wraps on my 1/16 bit, then I made a twist around something a bit larger, made a middle leg and wrapped the other coil.
Squeezed both until glowing in the center, the middle is my hottest spot.
I have two cotton wicks going
through each pointing down, the middle is the hottest and I have the least cotton there to prevent burning.
I believe with the U shaped other paper clip coil, the center doesnt get hot.