Rope (Gaurlford WR14)

Hi
I’m looking for some rope , probably no more than 1cm in diameter, to revamp my rescue cats scratching posts. They’re love to use them and don’t hold back! Consequently the rope doesn’t last long but the rest of the post is still intact. It seems like such a shame to throw it away when I can probably just wind new rope around the relevant part.
If you have any that is surplus to requirements, we would love to hear from you.
The second photos shows diameter of rope compared with my finger
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