To add durability, use a heating tool to slightly melt the edges of seat belt webbing. This will help to prevent fraying of the webbing and increase its overall durability. Use a heavy-duty machine for thick fabrics. Load your machine with thread that is suitable for seat belts. Done! Your https://www.northwestu.edu/?URL=https://www.ledteks.com/seatbelt-and-safety-belt-webbing