Steel ordered today for the blades, 48" x 7" x 7.5 mm, and my mate's going to roll it too, also asked him for 2 small strips to go along the bottom edge to hold the rubber on.
After Rural past times Norm and I will be making 2 graderblades to take to Biddenden tractorfest, its going to be a joint build so should be a laugh just hope we can do it in time