more progress
started on walls. welded 1/2" square tube frame. voids will be filled with 1/2" polyisocyanurate rigid insulation. Outside will be skinned with FRP (fiberglass) panels, inside with 1/8" baltic birch plywood.
Skinned the lower portion of the interior walls. Then sealed all the seams with 3M 740. Too lazy to weld ALL of these seams!
welded in a window frame with flat bar.
Here are some details of how the windows will work. I am making my own. Main reason being, all the RV type windows I can find are too thick when you add all their sliding panes screens, and bulky frames. So, they would make my walls 2-3 inches thick, which I don't want, since these have to fold up on top of one another and fit under my lid. Trying to keep the overall profile of the new camper top 7-8 inches high. Similar to a canvas rooftop tent.
The windows will be hinged, and will be able to be popped out about 12 inches using a Truth Hardware Push Rod, like this:
http://www.truth.com/products/Hinged-Window-Hardware/Operators/Push-Bar-Operators
Windows will be 3/8" thick polycarbonate. I will have quilted insulation on the inside that rolls up like a shade when not in use, and will velcro down and seal around the window opening to keep us warm at night, or to provide privacy.
that's it for now. 1 month till summer. lots of work to do.