A parametric library of modules for creating parts compatible with toy trains (currently focused primarily on Thomas- and Brio-compatible wooden trains, as well as Thomas Trackmaster (motorized plastic) and Take-N-Play (die cast).   Some functions in this library require other dotscad files. I would recommend cloning that repository into the same parent directory that contains this repository.   This OpenSCAD library is part of the dotscad project, an open collection of modules and Things for 3d printing. Please check there for the latest versions of this and other related files.