So. I have a trailertent base, a Conway Contiki DL, approx 6'6" x 4' x 1'6". We've had it a few years after my little 4'x2'8" trailer just wasn't big enough. Paid £45 for it then gutted the beyond-repair tent part and had to spend £50 on new wheels & tyres (cheaper than just new tyres!).
That sufficed for a few years, this year we went camping with our latest people carrier and had to get a roof cargo bag bcause we hadn't had an opportunity to fit a hitch. Well you get what you pay for and long story short we need the trailer sorted by next year.
This is what it will look like when I'll get the sides and 30+ year old plywood out:
The uprights contain simple drop-down stabiliser legs locked by a threaded wingnut, if I can keep those that would save me fitting recycled caravan corner steadies, we'll see.
I started with a couple of basic shape options
3'/900mm high was decided on, although I love the curved nose of the right-hand one it'll be 5 times harder to build and doesn't gain me any significant amount of interior space
Then all the essentials were modelled and fitted
The worktop will be removeable for easier loading-with-cargo and can slide in so the hatch can close with it in place.
The 3-way fridge will be on its own sliding base so it can be pulled out to be opened, but the sliding base needs to be removeable, again so it doesn't interfere with loading/unloading.
Finally there will be a pass-through so our electrics can be inside the box but the cord won't pass through the hatch seal. Precise details to be confirmed later.
