LEGO Compatible Parametric Ballasted Curves

Openscad parametric design for ballasted track curves
Options to do one layer of ballast to allow it to float on tiles, or one and a half layers of ballast to let it float on baseplates.

Used AI to help track down some issues with the ballast at larger radii that I couldn't figure out, but the fixes made sense.

Edit May 6, 2026:
Fixed some clearance issues with the inside of the ballast when fitting injection molded track