Happy New Year!
I searched 'cardboard' but did not find much. Nevertheless, this may be treading old water.
I've been a daily reader and occasional poster here for five+ years. Wonder Woman and I are committed to the idea of a small camper, just waiting until the kid gets out of school to free up funding. He's a frosh in auto tech at a community college. Don't know if he'll seek a four year degree or not. Thus, we see the light at the end of the tunnel.
The idea of a foamie intrigues me but I have not followed the thread (I didn't know it would turn into a 115 page monster.) I will delve into it as I make plans.
The cardboard: At work I occasionally run into thick cardboard used as a protective packing material. It's about 1/2 inch thick, honeycombed rather than corrugated. I think it might be cheaper than foam, maybe easier to join, and possibly stronger. My thoughts: a 1/2 inch thick wood frame with additional nailers at appropriate spots, voids filled in with the cardboard. Line the interior with 1/8" ply. Clad the outside with a second layer of cardboard. Then weatherproof the whole thing with fiberglass or paint impregnated fabric a la old time canoes.
Immediate questions that come to mind:
1) To provide the necessary rigidity, would the inside need to be glassed or fabriced to form monocoque structure? (See woodstrip canoe construction.)
2) Does anybody know where to locate this product ?
3) What sizes and thicknesses are available?
Time to start some internet research, but eager to hear from anybody with concrete information.
Happy New Year,
Tom
P.S. Just told my wife what I was up to here. She tells me they use the product where she works. She's not an inches and feet kind of person so I'll have to seek further information there. How about that?