About this 3D model
Single or Multilayer Helix in HO / OO Gauge. This is 1st / 2nd 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 have a 1st radius single track only Helix which can be found at the link below; Model Railway HO / OO 1st Radius Single Or Multilayer Helix by Simply Models - MakerWorld