I bought some teak for a boat I'm building. It is a gorgeous piece of 76" x roughly 12". I laid out my part, and suddenly I realized that there are boards nailed on each end of the teak. I thought maybe it was some weird way to prevent checking, which didn't really make sense.
Another boatbuilder enlightened me- The reason for the end cap is that you can't ship raw teak lumber (Can't remember if it was an export issue at origin or a US import issue), so they nail a piece on either end and ship them as bookshelves. I was told that sometimes they will put a rabbet on each end in lieu of the nailed strip.
I thought it was amusing.
Teak.jpg