Another metal 3D puzzle I've put together is Titanic. The puzzle contains about 37 pieces. Again, I was convinced that assembling these puzzles is not as easy as it looks ... it took me a few hours ... but the detail is very nice, considering how small it is.
I covered the hole in the back of the ship that was there. I used pieces of sheet metal from the parts frame. I made a simple pad. A few photos: