The file 'N-Scale Ballast Spreader 3D Printer Model' is (stl) file type, size is 5.6KB.
This is a nearly total remake of this: https://www.thingiverse.com/thing:3084994
I raised it with a roadbed profile and added an internal hopper to aid in ballast flow. Fits code 55 & 80 track.
N-Scale_Ballast_Spreader.stl | 26.4KB |