[dazee]

Start small and work your way up.  Part of the process is learning what does not work and why for what you want.  

Running test pieces will allow you to test different ways to join the track sections together.  Test if you want to use copper tape or braid.  If braid, then what type can you get your hands on, and how best to secure it to the track.  What type of track surface do you want etc.  You can go to all sorts of different levels before you even start construction.

I did something like it but on a smaller scale, for a single-lane course.  I used Solid Edge for the design as I was using a laser cutter, but the same designs would apply to a router too.  I made various sections that could then be joined together to make the track - in my case I also cut recesses to use copper wire instead of tape or braid.

https://dazee-projects.blogspot.com/2020...-test.html

I'm going to have to blow the dust off this one and have a little fun with it again soon.