[rallyhub]

The reason for doing the entire routing by hand was the lack of space in some places between the outer slots and the landscape.
The thin openings were made with a small flat file.
Success with your change to braid. I look forward to seeing the pictures about it.

Hub

       
Not enough space between the inner slot and the border for using a router.        The thin openings are made with a small flat file (photo of another track).