Thanks everyone for some fascinating replies
JDK, can you speak further on this:
The segmented pressed half chunks was a brilliant piece of design though
To add my own - and unrelated - trivia, I heard that all three of the tail feathers on the Piper Pawnee were the exact same part.
Ties or Struts? Iin the interests of harmony, I shall call them Tuts...
...unless of course some argumentative "person" want's to call them Sties
edited because, after all, this isn't JetBlast 