Yesterday we had a go at attaching the main rear panel between the two corner panels. First we ran the panel through the English wheel to put a slight curve on it. This acts like a swage by preventing the sheet-metal from bending in and out after it is attached. Then we butt-welded the main panel to the two corner panels and ground the welds off. Finally we gave it six coats of paint, including a final coat of matt finish. We are quite pleased with the result.