This is a remix of mattk007's Split Curve. I tweaked the dimensions to make them fit better to the official track, and made it easier to print without support. I also added a plug to hold the switch in from the bottom. Blender source file included as well. The tracks are modeled with a NURBS curve so they're easy to modify while still maintaining the rail width.
SplitY_Switch.stl | 56.9KB | |
SplitY_Track.stl | 223.2KB | |
SwitchPlug.stl | 12.2KB | |
TrackmasterSplitY.blend | 764.3KB |