I just received a new package from Shapeways today. I ordered a second pair of bottom dump trailers, and a new model, which is a tarped version of my 43' Wilson grain trailer. It is soaking in Bestine now, and I can give you a better picture of the raw model after tomorrow. For now, here is the model right out of the little blue plastic bag. I eliminated some of the interior slopes from the open top version, and added a hole in each hopper to allow the supportive wax to escape, and also reduce the overall material used in making this model. I am making these available on Shapeways now, since I have a physical model to validate my design. I will post more photos on Shapeways of the finished model once I get that far.