Hopefully a picture says 1000 words (see attached pic). This is my solution (in progress) to the nail pattern.  I started by watching this YouTube clip:   I found the exact dimensions from a great article on the plates on USS Constitution.  https://www.academia.edu/358814/The_Introduction_and_Use_of_Copper_Sheathing_A_History   Then I had to find wheels with the right width and space between prongs. I found only one - in China, that was a set of 5 different whee