I am thinking about printing a train in kit form (i.e. flat) to reduce the price. My reasoning is that it would get rid of all the support structure a one piece shell would need. With that in mind, I would like to lay the sides flat on the build surface. In HO scale, they would be about .75” x 8.5”. What is the minimum thickness that you would recommend? Right now my design is 9 scale inches thick (7/64 real inches, 2.8 mm). Will 6 scale inches (1.75 mm) survive printing and shipping?