This is a remix/repair of Rafiti's Caterpillar model here: https://www.thingiverse.com/thing:3638106
The original had a few small holes that caused a second layer in the rear half. I removed the second layer and patched the holes. I also added the rings around the side engine connections which were missing on the original too (I just pulled them off the holo-viewer model).
I then made a 110mm version split and keyed for easier printing and assembly. Use two ~10mm long pieces of 1.75mm filament as keys. I also added a version with a 5mm hole for a stand.