Charlee, I bought some leather boot laces at
Walmart last week and they just look too thin to stand up to be a treadle belt. It was all they had and the length is 72" but they are just a narrow strip of flat leather, smooth on one side and unfinished leather on the back. I am not sure one put a hole in it to join the ends that it would not tear out of the side.
Is this what you use or should I look at a regular shoe/boot store for some meatier ones?