Just want to introduce myself. I'm in VERY early planning stages for a camper. Here is the only state mine exists in so far:
I had a more fleshed out assembly done but I decided I didn't like the layout of my CAD drawings, sketches were too complicated and didn't update well if I made changes, so I've gone back to the beginning and am in the process of redoing it with better CAD layout.
It will likely be a while (years) before I can actually build anything, but that doesn't mean I can't research and design to my hearts content until then.
My target here is a mostly 1.5" foam construction with minimal plywood skeleton for hard attachment points as needed. I have access to a CNC router with 5'x8' work area through a local makerspace I'm a member of, so I'm designing the wall structure around that.