Barry Clements (baztrains) introduces a series of LPG (Propane) transport tank trailers and continues to expand his offerings of pneumatic bulk hopper trailers. The larger propane transport trailer is offered in both two and three axle versions. The new pneumatic bulk trailer is of an old late '50s-'60s Fruehauf design. The previously introduced modern design similar to the Heil 1040 cu.ft. design has been updated to include end caps for the trailer. These models are printed using 3D printing process and offered through Shapeways.