The twine I’m using measures about 1/8”. Six lines of it made a 3/8” rope. Twelve lines made a 1/2” rope.
Step 1: Another way to use a coat hanger.
Step 2: Mark and drill the holes.
Step 3: Install the rotating hooks.
Step 4: Set up the tension side.
You also want the tension weight to be movable as the length of the rope will shorten from all the twisting. You could use a pulley but I found a simple rounded edge works just fine. I'm using a piece of 1/2" electrical conduit.