Single or Multilayer Helix in HO / OO Gauge.
This is 1st Radius Track Setup.
If your looking at this you likely don't need instructions. Once you start printing it, it'll become pretty self explanatory. Please use the pictures as a guide for assembly.
I Also offer a Twin 1st/2nd Radius Helix which can be found at;
Model Railway HO / OO 1st/2nd Radius Single or Multilayer Helix by Simply Models - MakerWorld