Oh, I practiced welding from about March 2022 through about Sep 2022.
I worked on welding the trailer frame from Sep 2022, through late Jan 2023. Spent about 80 hrs doing so, and the frame itself (no suspension, coupler, tounge jack,etc) comes in at just over 66 lbs.
Building the Cabin FLOORIn order to minimize weight, I intend to build the cabin with the following properties:
1) Walls, ceiling, floor using 1.5" XPS foam
2) Where internal wall 'structure' is required (for screws, extra stiffness, or compression strength), I'll use solid basswood instead of plywood
3) Skins will be 2.1mm okoume plywood
4) Walls, etc., will be laminated with epoxy
I started with the floor. Which is ALL basswood framework (no foam):
The "natural sitting position" of the Vistabule design really appealed to me, as perhaps being useful/helpful for working out of my teardrop.
To that end, the large footwell bins seemed pretty important to me. I made mine 11" deep, instead of 9" deep (I believe) for the original Vistabule.
These were made with 1" foam, not 1.5".
I trimmed off the corners, and reinforced these with oak strips, before fiberglass/epoxy:
I worked on this floor/cubby component from Mar 2022 through late May, and spent somewhere around ~50 hrs.
It weighs ~110 lbs.
Total trailer (66 lbs) + running gear (axles, tires, etc.; 176 lbs) + floor (110 lbs) = 352 lbs.
I'm further along than this, but will post more this coming week.