PeterG:
You might try experimenting with the aluminum stickyback shelf covering. Just bought some from Wallmart in the kitchen appliances department. 20in wide roll 6 ft long. Just testing it myself. will heatshrink nicely around square edges. Havn't tried it around wingtips yet as I'm still playing with it. Looks promising. Has the brushed aluminum finished. Just tried the tube end of a ballpoint pen to make passable rivets. I thank my sister for this idea.