Here is a file for a Lynton and Barnstaple 4 Ton covered goods wagon. It is drawn full size so scale to suit your need.
The file is optimised for O-16.5 7mm/ft. Sizing for other scales may require some reworking to fit axles.
Enjoy
Jonny
LB_4_Ton_Covered_Goods.stl | 1.7MB |