Jon - The more questions the better, Im making this thread to help encourage other people to do this sort of work themselves. The outer frame is 100x50x2mm and the inner frame is 75x50x2mm. Its going to be full chequer plate floor, I was tossing up doing a nice varnished wood floor on it but I want it to be sealed from dust if I put a canopy on it. All up I think this will end up costing me about $500. But saying that I am getting it sand blasted and painted for free, well for a carton anyway. For what it is though its a very affordable project