My resin cast modern gons, one with pipe load and one with scrap iron from a recycle facility . BNSF was built right from one sitting here on a siding less the pipe load , same as the private road one . Not quite finished with either one yet , but the castings turned out nice. Also picture is an TTX flat I also cast and a Trainman 68 ft flat to compare the size . The castings are made to accept the Weaver roller brg truck at the bolster .My TTX flat has a real wood lasered deck attached to the open frame , brass I beams as per a prototype photo.
So many interesting modern cars , even the well cars have many variations . I just make my own for my BNSF and UP RR , I am just getting started on the track and benchwork . Mainly desert scene and mountains for a backdrop . When you sprinkle in cars that are unique with what is available , makes for better pictures.I have a few more masters I am working on.