George (@gblair), actually sanding isn't too bad. The bondo sands quite easily especially when done wet. I am using 400 grit initially to remove the bondo, keeping a light touch. After I clean out the panel lines and anywhere else I need to, I will smooth sand with 1000, 2000, and 3000 grit paper.
If I were doing a natural metal bird, I would have probably done it differently, but this will be an SEA camouflaged and heavily weathered Thud. I have been looking forward to doing this diorama for several years and I have most of what I need now to do it including a couple of Vietnam era ground support crew and equipment. Probably the large part of the diorama (other than the tarmac) will be the revetment wall.
