Here are a few of my On30 freight cars I have built. I enjoy building them and they are inexpensive too.
Left to right....short wood reefer, two bay steel hopper, short wood box, one bay hopper and a long OB wood box car.
I made the cars to operate well so frame detail is light. A few commercial detail parts....some I made myself.
Need to get them to the paint shop next!
THX