I am going to buy a flat trailer that used to be an 8'x20' travel trailer - someone took the top off leaving only a flat surface, intending to do something else with it but never had the time. It has two axles - there is no weight rating on the title. I am guessing that the weight rating will be at least 3,000 pounds. Does that make sense? I want to build a box trailer on it and use it 2/3 of it to live in and 1/3 to haul toys. Has anyone on this forum ever done something like this from scratch? I would like to use metal studs for the walls, to lighten up the load. I want to use a 2x6 stud so that I can stuff it with insulation. Any suggestions for other materials? I know it is not light, but wall board is fire resistant - will something like that hold up in a trailer? Any suggestions are appreciated. I have basic carpentry skills but concered about the mobile aspect of it. If it were being built on a fixed foundation on land, I would not be posting here.