Work on the upper wing section was a little tricky as it was a five feet long panel and I’m alone in the shop. I started with a very low crown lower anvil and worked the panel shape judiciously - very slowly - and alternated strokes past the centre line and some to the centre line. I then swapped sides and worked the other end of the panel using the same technique of stopping on stroke at the centre and the next past the centre. The reason for doing this is that if I stopped all the strokes at the centre, the panel would have a ridge in the middle and it would be very difficult to smooth out the deformation.
