What are “craftsman” kits?
A craftsman kit implies that more time (and perhaps skill/experience) is needed to assemble the kit. They often include parts made of wood, metal, plaster, and paper/cardstock in addition to plastic, requiring knowledge of what adhesives should be used for different materials. The benefit of this extra work is that the model typically looks much more realistic and detailed if properly assembled; such kits are often made in small runs and correspond to a specific prototype rather than simply giving a general impression. Many structures are available as craftsman kits in addition to models of rolling stock, with Westerfield being probably the best known supplier of cars in HO scale.