These two photographs show the dummy rivets, which the fabricator is in the process of fitting. Attached using studs and a stud welder, this method is quick and easy to use. The tank platework has a mark etched into it at each rivet centre by the laser cutter which profiles the plates, and this is used to accurately locate the studs for welding, after which the pre-machined rivet heads are welded to the stud.
Above, the rear combined water tank & coal bunker takes shape. The horizontal rivet line along the side define the split between the water and coal, with coal above on plates sloped to trim the coal towards the shovelling plate. The water space, before fitting the coal plates, is shown below, again with perforated baffles to stop the sloshing of water around the tank when the locomotive is moving.