A big day yesterday, as I started building the real thing, no more mock up! I'm using 12mm ply for the floor and 9mm for the sides although having read Rhys's Kim journal, I think I could have gone lighter. I will probably have to make some relieving cuts to allow the side panels to bend where I want. I had some 25mm ash left over from a previous project which I am using for the joints. I plan to do the tub first, then construct the chassis round it.
I've bought an axle, carriers, hubs etc for the rear from Gemini, but I'm holding back on the front as I am still unsure about springing and stub axles/bearings and I haven't managed to source my wheels yet.