A few examples scaled down for email.
I bought my machine from you to design & build items for my garden railway - after a difficult start getting to grips with OpenScad I can confirm I used it to design everything** in these photos and printed using the Cura software. My biggest problem has been gluing the sections together..... Hard Plastic glue wasn't really reliable so I strengthed with out-of-sight hot glue tacking. I have lots of photos of the stuff I've been doing at full resolution if anything is of particular use.
**except the locomotive, which is pulling three 3D printed coaches, was something I built manually from plastcard, etc. before I had a 3D printer